{"id":17047,"date":"2023-08-24T13:10:10","date_gmt":"2023-08-24T11:10:10","guid":{"rendered":"https:\/\/dev.guehring.com\/products\/gewindewerkzeuge\/"},"modified":"2026-04-22T13:57:03","modified_gmt":"2026-04-22T13:57:03","slug":"threading-tools","status":"publish","type":"page","link":"https:\/\/guehring.com\/de-en\/products\/threading-tools\/","title":{"rendered":"Threading tools"},"content":{"rendered":"

[et_pb_section fb_built=”1″ _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_row module_class=”gue-row-1col-text-centered” _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Threading tools<\/h1>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row module_class=”gue-row-1col-text-centered” _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

directly to our highlights<\/div>\n

[\/et_pb_text][et_pb_text module_class=”gue-tabs” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Taps<\/a> Fluteless taps<\/a> Thread milling cutters<\/a><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_row module_class=”gue-row-1col-text-centered” _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Perfectly shaped threads<\/h2>\n

Tools for producing threads perform a particularly delicate task: they are used at the end of the production chain when components or individual parts are almost finished. This is where G\u00fchring threading tools for process reliability come into play. There are several processes that lead to the desired result: fluteless tapping, thread tapping and thread milling. We would be happy to work with our product management and experienced application engineers to determine which thread cutting solution is most economical for you.<\/p>\n

Threading tools in the online shop<\/strong><\/a><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row module_class=”gue-breadcrumbs” _builder_version=”4.21.0″ _module_preset=”default” saved_tabs=”all” locked=”off” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_code _builder_version=”4.25.2″ _module_preset=”default” global_colors_info=”{}”]Home<\/a><\/span><\/span>[\/et_pb_code][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”3_4,1_4″ module_class=”gue-page-header” _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”3_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/guehring.com\/wp-content\/uploads\/2024\/02\/GUE_gewindebohrer-metallbearbeitung.jpg” alt=”Professional use of a tap in metalworking” title_text=”Professional use of a tap in metalworking” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”1_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Downloads & Links<\/div>\n

Threading tools in the G\u00fchring general catalogue<\/span><\/a><\/p>\n

Modular fluteless tap<\/a><\/p>\n

Thread milling cutters<\/a><\/p>\n

Pionex threading tools<\/span><\/a><\/p>\n

Download software CNC G\u00fchro ThreadMill<\/span><\/a><\/p>\n

Downloads to threading tools<\/span><\/a><\/p>\n

News to threading tools<\/span><\/a><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.27.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_row module_class=”gue-row-1col-text-centered” _builder_version=”4.27.5″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

directly to our product groups<\/div>\n

[\/et_pb_text][et_pb_text module_class=”gue-tabs” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Taps<\/a> Fluteless taps<\/a> Thread milling cutters<\/a><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_row module_class=”gue-row-1col-text-centered” _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.4″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Threading basics<\/h2>\n

Definition and use of threads<\/h3>\n

A thread is a profiled notch that runs continuously in a spiral around a cylindrical wall in a helical line. The \u2018notch\u2019 is referred to as a thread pitch. A basic distinction is made between internal threads and external threads. Suitable clamping screws can be screwed into an internal thread, which generate their holding force through the principle of the inclined plane.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”3_5,2_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”\/wp-content\/uploads\/2025\/02\/GUE_herstellung-gewinde.jpg” alt=”G\u00fchring tool for producing internal and external threads on a textured metal surface” title_text=”G\u00fchring tool for producing internal and external threads on a textured metal surface” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Where are threads used?<\/h3>\n

The main use of threads is to connect two objects together or to convert a rotational movement into an axial movement. The basic principle of detachable connections is used wherever components need to be joined together, for example in the automotive<\/a>, aircraft<\/a>, mechanical engineering<\/a>, energy technology<\/a> and also in numerous everyday objects.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row module_class=”gue-row-text” _builder_version=”4.27.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.27.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.4″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Standard threads, fine metric threads and trapezoidal threads<\/h4>\n

The most widely used thread types in Europe are metric ISO threads, also known as standard, normal or tapered threads. These have a profile form in which the outer edges converge in a wedge shape. Metric fine threads have the same structure as metric standard threads. The difference lies in a narrower and less deeply cut thread profile. Due to the smaller pitch, the fine thread can transmit more tensile force than the standard thread. The fine thread is usually used when there is little space available \u2013 for example, for adjusting screws in measuring devices. In a trapezoidal thread, the profile of the thread flanks has the shape of an isosceles trapezoid. In addition, the thread flanks of a trapezoidal thread are thicker and the pitch dimensions are larger, which means that greater axial forces can be transmitted. Trapezoidal threads are therefore used where movements are transmitted, for example in lathes.<\/p>\n

There are also two thread types: right-hand thread and left-hand thread. With a right-hand thread, the screw is screwed in clockwise. Most people are right-handed and, for ergonomic reasons, need to exert less force with a right-hand thread. This is why this thread type is preferred. Left-hand threads, on the other hand, are only used in special cases.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.24.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.24.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text module_class=”gue-row-text-module” _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Did you know? <\/span>
Three fun facts about thread production<\/span><\/h3>\n

[\/et_pb_text][et_pb_toggle title=”Fun fact 1: Who invented the thread?” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

The principle of threads was already known in ancient times and was used for screw and spiral constructions. The first known records of threading tools date back to Leonardo da Vinci in the 16th century. But back then, every thread was unique. It was not until the 19th century that the Englishman Joseph Whitworth had the idea of standardising threads. As a result, the Whitworth thread quickly spread throughout Europe and remains one of the best-known thread standards to this day.<\/p>\n

[\/et_pb_toggle][et_pb_toggle title=”Fun fact 2: Why is an internal thread called a \u2018nut\u2019?” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

The counterpart to a screw with an internal thread is also called a nut. But why is that? In the past, what we now call a screw was referred to as a father screw and what we now call a nut was referred to as a mother screw. Over time, however, \u2018mother screw\u2019 became shortened to \u2018nut\u2019.<\/p>\n

[\/et_pb_toggle][et_pb_toggle title=”Fun fact 3: How long was the world’s longest thread?” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

The longest thread ever made was on a pipeline in Russia. It was 34.5 kilometres long in total.<\/p>\n

[\/et_pb_toggle][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_row module_class=”gue-row-text” _builder_version=”4.27.4″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Hole types <\/span><\/h3>\n

Blind hole, through-thread and through-hole-blind hole<\/h3>\n

When manufacturing threads, a distinction is made between three hole types: blind holes, through-threads and through-holes with blind holes. Depending on which core hole you choose, you will need different tools.<\/p>\n

A blind hole does not penetrate the workpiece completely and is used when the material thickness of the workpiece is very thick and drilling through is not necessary or is not desired for design reasons, such as sealing, stability or operational safety. When drilling blind holes, the intended depth must be maintained exactly. In addition, the core hole for blind holes should be deeper than the thread that you want to cut later by the chamfer lead.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=”Table” _builder_version=”4.25.2″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n\n\n\n\n\n\n\n\n
<\/th>\n\"Close-up<\/th>\n\"Close-up<\/th>\n\"Close-up<\/th>\n<\/tr>\n
Hole type<\/strong><\/th>\nThrough-thread<\/strong><\/th>\nBlind hole<\/strong><\/th>\nThrough-hole blind hole<\/strong><\/th>\n<\/tr>\n<\/thead>\n
Description<\/strong><\/td>\nThread that runs across the entire length of a fastener and allows the use of nuts or threaded connections on both sides<\/td>\nThread which is cut into a material only to a certain depth without penetrating it completely<\/td>\nThread is continuous on one page of the workpiece (through-hole), while on the other page it ends in a blind hole<\/td>\n<\/tr>\n
Application<\/strong><\/td>\nGeneral construction and assembly applications where a continuous fastening is required<\/td>\nFastening on one side, e.g. with clamping screws, without the thread being visible on the other page<\/td>\nApplications where a secure and accessible fastening is required while the thread remains hidden on the other page of the workpiece<\/td>\n<\/tr>\n
Tools<\/strong><\/td>\nTap with spiral point or left-hand grooved tap<\/td>\nRight grooved tap or straight-fluted tap with short chamfer lead<\/td>\nRight grooved tap or straight-fluted tap with short chamfer lead<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_row column_structure=”3_5,2_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.21.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_video src=”https:\/\/youtu.be\/hzaZ_1TzDBQ” _builder_version=”4.24.0″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_video][\/et_pb_column][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Thread core hole <\/span>
What needs to be considered with core holes?<\/span><\/h3>\n

To produce an internal thread, material is cut from a previously drilled core hole. This core hole must have a defined diameter and a countersink. In addition, the core hole should always be slightly smaller than the nominal diameter of the thread that is to be inserted into it.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.21.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_toggle title=”Why deburr threads?” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Before the thread cutting, the core hole is countersunk with a 90\u00b0 countersink. This prevents the first threads from being pressed out and the cutting tools can be applied more easily. <\/em>The countersinks should be slightly larger than the nominal diameter.<\/p>\n

[\/et_pb_toggle][et_pb_toggle title=”How to perform thread drilling?” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

With a tap an internal thread is cut into a core hole.<\/em> In the process, the cutting teeth of the tap remove metal in form of chips from the workpiece and in this way create a defined thread profile.<\/p>\n

[\/et_pb_toggle][et_pb_toggle title=”How to check threads?” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

The quality of an internal thread can be measured quickly and reliably using a thread limit gauge. If the \u2018go side\u2019 of the thread limit gauge can be screwed into the thread without any problems, the minimum dimensions of the outside diameter and the flank diameter are within the specified tolerances. The mating dimension of the thread is OK. Tolerances are dimensional values or \u2018permissible deviations from the nominal size\u2019. The lower the tolerances, the smaller the gap between the screw and the thread.<\/p>\n

Now the other side of the thread limit gauge, marked with a red ring, is used. Ideally, this \u2018no-go side\u2019 should only be able to be moved two revolutions into the thread; if more revolutions are required, the thread is a reject.<\/p>\n

[\/et_pb_toggle][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_row module_class=”gue-adbox gue-newsbox” _builder_version=”4.27.0″ _module_preset=”default” link_option_url=”#” saved_tabs=”all” locked=”off” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/guehring.com\/wp-content\/uploads\/2024\/02\/GUE_website-pikto_blogartikel.svg” _builder_version=”4.24.2″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” link_option_url=”\/de-en\/creating-threads-the-most-common-mistakes-and-how-to-aviod-them\/” global_colors_info=”{}”]<\/p>\n

\"#$6\" Newsroom<\/div>\n
Frequent errors in thread manufacturing<\/div>\n
Thread production occurs at the end of the manufacturing chain. If something goes wrong at this stage, it results in costly rework. We will show you typical problems that arise during thread tapping, milling and moulding, and how you can prevent them in advance.<\/div>\n
go to article<\/a><\/div>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ module_id=”thread-tabs” _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_row module_class=”gue-row-1col-text-centered” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Taps<\/h2>\n

What does a tap do?<\/h3>\n

A tap (also known as a thread cutter) is a drill bit used to create an internal thread. When thread tapping, the thread is created by cutting material out of a previously drilled core hole. This process can be used to machine almost all machinable materials. No special requirements are placed on the machines. The appropriate tool for cutting external threads in metal is a die. Dies for ISO metric threads can be found in the G\u00fchring online shop.<\/p>\n

Die for metric ISO-thread in the online shop<\/strong><\/a><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”3_5,2_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.21.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_video src=”https:\/\/youtu.be\/YTJ6oxc4n9Q” _builder_version=”4.24.0″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_video][\/et_pb_column][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

How does a tap work?<\/h3>\n

When performing thread tapping, the rotating tool cuts the thread into a previously drilled core hole at a defined feed rate (corresponding to the thread pitch). Taps have two or more cutting edges, which in turn have teeth. As the tap rotates, each of these teeth removes a chip from the material being machined. The teeth are flattened to varying degrees and serve only to guide the tap in the already cut part of the thread at the rear of the tool for thread tapping.<\/p>\n

Taps in the online shop<\/strong><\/a><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”3_5,2_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.21.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”\/wp-content\/uploads\/2025\/02\/GUE_gewindebohrer-fertigungsprozess.jpg” alt=”Tap in a manufacturing process for producing threads” title_text=”Tap in a manufacturing process for producing threads” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Taps from G\u00fchring <\/span>
How are taps manufactured?<\/span><\/h3>\n

G\u00fchring manufactures high-precision ground taps on specially developed machines. We use the highest quality steels (HSCO) and carbide from our own production as the tool materials for our tap drills.<\/p>\n

Solid carbide taps demonstrate their strengths in short-chipping materials. Due to its high hardness, the metal enables significantly longer tool lives. At the same time, machining time is reduced significantly because higher cutting speeds can be used. HSCO high speed steel can be used as a tool material for many different materials. For example, a thread cutter made of HSCO can cut steel with high process reliability, whereas carbide cutters would break due to their low toughness.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_row module_class=”gue-row-1col-text-centered” _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Expertise on the topic thread tapping directly from manufacturer <\/span>
Bundled expertise for your thread production<\/span><\/h3>\n

We encounter threads everywhere in everyday life. However, thread tapping is a demanding machining process. Below you will find important basic information and product knowledge on the subject of thread tapping.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”3_5,2_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.21.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”\/wp-content\/uploads\/2025\/02\/GUE_gewindebohrer-anwendung.jpg” alt=”Tap in use, precisely cutting a thread into a metal surface, with chips produced during the process” title_text=”Tap in use, precisely cutting a thread into a metal surface, with chips produced during the process” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Tap designation<\/h3>\n

Components with external threads (e.g. clamping screws) and components with internal threads (e.g. nuts) must fit together. To ensure this, there are standards that clearly define the dimensions of a thread. The most important measurements are the outside diameter, the flank diameter, the core diameter, the pitch, the angle of thread and the pitch angle. For example, DIN 13 specifies the basic parameters for metric threads and their tolerances. Hand taps are designated in DIN 352, for example.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”3_5,2_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.21.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_code _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]

<\/div>[\/et_pb_code][\/et_pb_column][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Discover the features of a tap<\/h3>\n

The geometry of a tap is determined by various characteristics. These characteristics influence the machining process and the stability of the tap during thread production. Click on the graphic to see the indications for the different characteristics.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”3_5,2_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.21.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_video src=”https:\/\/youtu.be\/CtrVI4cwiLE” _builder_version=”4.24.2″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_video][\/et_pb_column][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Tap through hole<\/h3>\n

A through-hole passes completely through the workpiece. Taps for through-holes have a special feature compared to tools for blind holes: they have more flutes at the chamfer lead, as the tip of the drill can exit at the end of the drill hole.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”3_5,2_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.27.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_video src=”https:\/\/youtu.be\/FmtwtAPclno” _builder_version=”4.24.2″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_video][\/et_pb_column][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Blind hole tap<\/h3>\n

We recommend using spiral tools for machining blind hole threads in long-chipping materials. These tools transport the chips upwards out of the workpiece thanks to their positive helix angles. For machining blind hole threads in short-chipping materials such as cast iron or aluminium, we recommend using a straight-fluted tap with shape C. The short chips are flushed away from the cutting edges and out of the drill hole by either internal or external cooling.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.27.4″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_row module_class=”gue-row-1col-text-centered” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

What types of taps are there?<\/h3>\n

Taps can be divided into three types: straight-fluted, spiral-fluted and straight-fluted with spiral point. The type that should be used depends on the material of the component and whether the hole is a blind hole or a through-hole.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”2_5,3_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/guehring.com\/wp-content\/uploads\/2024\/04\/GUE_gewindebohrer-geradegenutet-detail.jpg” alt=”Close-up of a straight-fluted tap from G\u00fchring” title_text=”Close-up of a straight-fluted tap from G\u00fchring” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Straight-flute tap<\/h4>\n

The straight-fluted tap produces small chips. These are washed away by internal or external cooling.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”2_5,3_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.22.1″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/guehring.com\/wp-content\/uploads\/2024\/04\/GUE_gewindebohrer-rechtsspiralisiert-nahaufnahme.jpg” alt=”Close-up of a right-hand spiral tap from G\u00fchring” title_text=”Close-up of a right-hand spiral tap from G\u00fchring” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Right-hand spiral tap<\/h4>\n

The right-hand spiral tap conveys the chips upwards out of the hole against the feed direction with its positive rake angle.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”2_5,3_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.22.1″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”\/wp-content\/uploads\/2024\/04\/GUE_gewindebohrer-schaelanschnitt-nahaufnahme.jpg” alt=”Close-up of a G\u00fchring thread tap with peeling cut” title_text=”Close-up of a G\u00fchring thread tap with peeling cut” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Spiral point tap<\/h4>\n

Taps with a spiral point have a corrected main cutting edge: a negative side rake angle is ground onto the cutting edge. This pushes the chip out of the hole in the feed direction.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”2_5,3_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.22.1″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”\/wp-content\/uploads\/2024\/04\/GUE_spiralisierter-gewindebohrer-detail.jpg” alt=”Detailed view of a spiralised tap from G\u00fchring” title_text=”Detailed view of a spiralised tap from G\u00fchring” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Left-hand spiral tap<\/h4>\n

The same principle applies to left-handed spiral taps. The left-handed twist pushes the chips out of the hole. Left-handed twist drills and tap drills with a spiral point are therefore particularly suitable for machining through-hole threads.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.27.4″ _module_preset=”default” custom_padding=”||||false|false” locked=”off” global_colors_info=”{}”][et_pb_row module_class=”gue-row-1col-text-centered” _builder_version=”4.27.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Thread tapping in practice<\/span>
Troubleshooting and best practices<\/span><\/h3>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”3_5,2_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.27.4″ _module_preset=”default” custom_padding=”||||false|false” locked=”off” global_colors_info=”{}”][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/guehring.com\/wp-content\/uploads\/2025\/02\/GUE_gewindebohrer-bruch.jpg” alt=”Tap breaks during use, leaving fragments and chips visible on a metallic surface” title_text=”Tap breaks during use, leaving fragments and chips visible on a metallic surface” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

The tap breaks?<\/h4>\n

A tap that breaks during machining is annoying: the machine has to be stopped and, in the worst case, the component becomes unusable. But what causes such tool breakage in thread production? There can be several reasons for this:<\/p>\n

[\/et_pb_text][et_pb_toggle title=”Core hole is too small” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Drill the core hole to the correct diameter. You can refer to threaded core hole tables for guidance.<\/p>\n

[\/et_pb_toggle][et_pb_toggle title=”Tap runs into core hole base” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Check the hole depth and use a thread cutting chuck with length compensation or overload protection.<\/p>\n

[\/et_pb_toggle][et_pb_toggle title=”Tool is unsuitable” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

The hardness of the tool or its cutting edge geometry may not be suitable for the machining operation. You can find the right tool for your application in the G\u00fchring Navigator.<\/p>\n

here’s the G\u00fchring Navigator<\/a><\/p>\n

[\/et_pb_toggle][et_pb_toggle title=”Tap is guided incorrectly” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

This can happen due to a missing or incorrect deburring in the core hole or position or angular errors. Tool clamping is an important factor in ensuring high process reliability. The use of a synchronous threaded chuck with minimal compensation is recommended. Correct workpiece clamping is also crucial.<\/p>\n

Synchro tapping chucks in the online shop<\/strong><\/a><\/p>\n

[\/et_pb_toggle][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”3_5,2_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.21.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_video src=”https:\/\/youtu.be\/w_SQwJD6ymI” _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_video][\/et_pb_column][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Thread tapping in hard-to-reach places<\/h4>\n

Sometimes threads need to be tapped in hard-to-reach places, such as deep recesses, shoulders, interfering edges on fixtures or directly on cast walls. In such cases, it is advisable to use an extra-long tap.<\/p>\n

Taps with extra length in the online shop<\/strong><\/a><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”3_5,2_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.21.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/guehring.com\/wp-content\/uploads\/2025\/02\/GUE_gewindebohrer-praezisionsarbeit.jpg” alt=”Precision machine work when drilling out a tap” title_text=”Precision machine work when drilling out a tap” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Tap reboring<\/h4>\n

If tool breakage occurs during threading, the broken tap can be drilled out with a smaller drill. To do this, set the running direction of the drilling machine against the tap running direction. The small drill should just reach the inner thread path edges. In large manufacturing companies, there are special machines that remove the broken tap by eroding.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row module_class=”gue-row-text” _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Tap: how to pre-drill?<\/h4>\n

Before the thread can be cut with the tap, a suitable core hole must be drilled. The diameter of the core hole is slightly smaller than the size of the screw that will later be screwed in. This is because the subsequent threads change the diameter. The exact diameter for a pre-drilled hole is determined by the ISO table, which assigns a drill size to each thread size. Here are examples of three common metric standard threads:<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”]<\/p>\n\n\n\n\n\n\n\n
<\/th>\nTap M2<\/th>\nTap M4<\/th>\nTap M10<\/th>\n<\/tr>\n<\/thead>\n
Thread size<\/strong><\/td>\nM2<\/td>\nM4<\/td>\nM10<\/td>\n<\/tr>\n
Core hole diameter<\/strong><\/td>\n1.6 mm<\/td>\n3.3 mm<\/td>\n8.5 mm<\/td>\n<\/tr>\n
Pitch standard thread<\/strong><\/td>\n0.40 mm<\/td>\n0.70 mm<\/td>\n1.50 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row module_class=”gue-row-text” _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Drill the core hole using a twist drill on a drill press or handheld drill. If you slightly widen the upper edges of the core hole with a countersink after the pre-drilled hole is completed, thread cutting will be easier afterwards.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.27.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_row module_class=”gue-row-text” _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Tap set<\/h3>\n

In the field of thread tapping, a distinction is made between hand taps and machine taps. When machining internal threads by hand, the machinist uses a tap set consisting of three taps: a cutting pilot, a semi-finishing tap and a bottoming tap.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”3_5,2_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.21.0″ _module_preset=”default” locked=”off” global_colors_info=”{}”][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”\/wp-content\/uploads\/2025\/02\/GUE_gewindeschneider-seitenansicht.jpg” alt=”Three different types of thread cutters for hand drills in side view, presented in a row” title_text=”Three different types of thread cutters for hand drills in side view, presented in a row” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

The cutting pilot is marked with one ring on the shank, the centre tap with two rings. The bottoming tap has no rings or (more rarely) three rings. Each of these hand taps has an external square at the end of the shank, which can be clamped into a tap wrench. With machine taps, one tool performs all three tasks.<\/p>\n

Machine taps are suitable for use on CNC machines. Thanks to their special geometry, they enable reliable machining of different types of metal and other materials.<\/p>\n

Hand tap set for metric ISO-thread in the online shop<\/strong><\/a>
Machine taps in the online shop<\/strong><\/a><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ module_id=”highlights-threading-taps” _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_row module_class=”gue-row-1col-text-centered” _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Highlights <\/span>
Taps<\/span><\/h2>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”2_5,3_5″ module_class=”gue-row-vertical-aligned-content gue-row-2col-image-text” _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”2_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/guehring.com\/wp-content\/uploads\/2025\/02\/GUE_gewindebohrer-pionex-nahaufnahme.jpg” alt=”Close-up of a Pionex tap” title_text=”Close-up of a Pionex tap” _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”3_5″ _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n

Tap <\/span>
Pionex<\/span><\/h3>\n

High-performance tap for through and blind holes<\/h4>\n

This tool ensures optimal chip removal and guarantees higher cutting speeds thanks to a combination of a high helix and a tapered stepped threaded part. A sophisticated coating system based on a hard material sliding layer not only reduces the friction but also makes a significant contribution to improving chip removal. Both the cutting speed and the tool life can thus be increased.<\/p>\n

Your advantages with the tap Pionex:<\/h4>\n