Threading Taps

Threading taps are a tool used to create screw threads (tapping) into a pre-drilled hole, to create a clean fitting for bolts in metals and plastics. Used in engineering and manufacturing, threading taps work like a drill but due to the unique shape of a tap, when screwed into a piece of material, screw threads are created. Threading taps must be used in a predrilled hole and cannot be used for drilling entire holes.


The difference between taps and dies is that taps are used to create or repair threads in holes which is ideal for nuts. Dies are used to cut threads on materials such as steel rods to allow a fitting to be screwed on and attached (threading). The tap is designed for internal thread cutting, so this would be used on the fastener hole or a nut, whereas a die is used for the external thread, like on a bolt. In other words, tapping uses the tap part of the set and creates internal threads and threading is the process used by the die to cut external threads.


Threading Taps are available in HSS (high-speed steel) and carbide and can be used by hand or machine. Our range of threading taps offers the best tool for every machining method or process to meet all your requirements. Threading taps can be used with a tap wrench or power tool and are available in various sizes to accommodate a range of applications.


Taps can be used by machinists in different ways for different applications:


  • Taper taps or starter taps, are used to initially start a new thread with the first 7-10 threads having a flatter profile than those further up the shaft.

  • Plug taps are similar to taper taps but only have 3-5 starting rows ground down leaving more shaft to create a thread.

  • Bottom taps are square in profile with no ground down threads and are used after a taper or plug tap has been used. Their full length cutting shape allow for threads to be cut at the very bottom of a hole for maximum thread length.

  • Spiral flute taps – for blind hole applications

  • Spiral point taps – push chips forward, ideal for through-hole applications

  • Straight flute taps – most commonly, designed for short chipping materials

  • Forming taps – compresses to produce a thread rather than cutting

  • Taps come in both Metric and Imperial dimensions and can have different shank types. Threading taps are used in conjunction with a tap wrench so always consider the maximum side tap your wrench can hold when purchasing.

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Description Price Set Type Thread Size Type Pitch Thread Standard Thread Direction Number of Pieces Overall Length Shank Standard Hand/Machine Tap Material Shank Diameter Shank Type Ring Colour
RS Stock No. 248-5560
BrandRS PRO
MYR418.51
Each
units
Threading Tap Set - - - - - 12 - - - - - - -
RS Stock No. 375-9323
BrandRS PRO
MYR270.98
1 Set
Set(s)
Hand Tap, Tap Set M12 Hand Tap, Tap Set - - - 8 - - - HSS - - -
RS Stock No. 215-574
BrandRS PRO
MYR95.60
Each
units
Hand Tap M5 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 455-908
BrandRS PRO
MYR53.22
Each
units
Threading Tap M2.5 Spiral Point 0.45mm Metric - 1 44.5 mm - - HSS 2.8 mm - -
RS Stock No. 668-1122
BrandRS PRO
MYR1,256.05
1 Set
Set(s)
Threading Tap Set - - - - - 44 - - - - - - -
RS Stock No. 152-564
BrandRS PRO
MYR41.19
Each
units
Threading Tap M2.5 Straight Flute, Second 0.45mm Metric - 1 - - Hand Tap HSS - - -
RS Stock No. 694-009
BrandRS PRO
MYR862.34
Each
units
Threading Tap Set - - - - - 29 - - - HSS - - -
RS Stock No. 668-1119
BrandRS PRO
MYR530.39
1 Set
Set(s)
Hand Tap M12 Hand Tap - - - 22 - - - HSS - - -
RS Stock No. 668-1071
BrandRS PRO
MYR114.68
1 Set
Set(s)
Threading Tap M4 Straight Flute 0.7mm Metric Left Hand 1 53 mm - - HSS 4 mm - -
RS Stock No. 215-530
BrandRS PRO
MYR94.99
Each
units
Hand Tap M6 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 506-4267
BrandRS PRO
MYR512.62
Each
units
Threading Tap Set - - - - - 18 - - - HSS - - -
RS Stock No. 455-895
BrandRS PRO
MYR58.74
Each
units
Threading Tap M4 Spiral Point 0.7mm Metric - 1 53 mm - - HSS 4 mm - -
RS Stock No. 215-546
BrandRS PRO
MYR135.21
Each
units
Hand Tap M10 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 455-970
BrandRS PRO
MYR58.46
Each
units
Threading Tap #4-40 Spiral Point - UNC - 1 48 mm - - HSS 3.15 mm - -
RS Stock No. 340-6568
BrandRS PRO
MYR424.16
1 Set
Set(s)
Spiral Flute Tap M12 Spiral Flute Tap - - - 7 - - - HSS - - -
RS Stock No. 917-2609
BrandRS PRO
MYR559.17
1 Set
Set(s)
Threading Tap Set - - - - - 14 - - - HSS - - -
RS Stock No. 215-568
BrandRS PRO
MYR98.09
Each
units
Hand Tap M8 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 340-6552
BrandRS PRO
MYR374.38
1 Set
Set(s)
Spiral Point Tap M12 Spiral Point Tap - - - 7 - - - HSS - - -
RS Stock No. 215-580
BrandRS PRO
MYR95.93
Each
units
Hand Tap M4 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 522-7531
BrandRS PRO
MYR63.33
Each
units
Threading Tap M5 Second, Straight Flute 0.5mm Metric Fine - 1 60 mm - - HSS 5 mm - -