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. 375-9323
BrandRS PRO
TWD2,592.00
1 Set
Set(s)
Hand Tap, Tap Set M12 Hand Tap, Tap Set - - - 8 - - - HSS - - -
RS Stock No. 509-0238
Mfr. Part No.10012
BrandEVENTUS
TWD266.00
Each
units
Hand Tap M5 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 427-963
BrandRS PRO
TWD2,699.00
Each
units
Spiral Point Tap M12 Spiral Point Tap - - - 7 - - - HSS - - -
RS Stock No. 917-2609
BrandRS PRO
TWD3,790.00
1 Set
Set(s)
Threading Tap Set - - - - - 14 - - - HSS - - -
RS Stock No. 152-378
BrandRS PRO
TWD801.00
1 Set
Set(s)
Straight Flute Tap 1/2 in BSPF Straight Flute Tap - - - 2 - - - HSS - - -
RS Stock No. 668-1062
BrandRS PRO
TWD662.00
1 Set
Set(s)
Threading Tap M3 Straight Flute 0.5mm Metric Left Hand 1 48 mm - - HSS 3.15 mm - -
RS Stock No. 508-9446
Mfr. Part No.05910
BrandEXACT
TWD2,178.00
1 Set
Set(s)
Combi Tap M10 Combi Tap - - - 7 - - - HSS - - -
RS Stock No. 499-340
Mfr. Part No.4405926
BrandEXACT
TWD595.00
Each
units
Threading Tap M10 Spiral Flute 1.5mm Metric Right Hand 7 59 mm - - HSS 0.25 in - -
RS Stock No. 240-3388
Mfr. Part No.E500 12.0 X 1.75 3FL BOTT
BrandDormer
TWD846.00
Each
units
Threading Tap M12 Plug, Straight Flute 1.75mm Metric Right Hand 1 89 mm - Machine Tap HSS 9 mm - -
RS Stock No. 152-025
BrandRS PRO
TWD430.00
Each
units
Threading Tap M5 Second, Spiral Flute 0.8mm Metric - 1 - - - HSS - - -
RS Stock No. 602-2107
Mfr. Part No.20181
BrandEVENTUS
TWD261.00
Each
units
Threading Tap G1/8-28 Short Machine - BSP - 1 63 mm - - HSS - - -
RS Stock No. 668-1071
BrandRS PRO
TWD774.00
1 Set
Set(s)
Threading Tap M4 Straight Flute 0.7mm Metric Left Hand 1 53 mm - - HSS 4 mm - -
RS Stock No. 508-9569
Mfr. Part No.05971
BrandEXACT
TWD553.00
Each
units
Threading Tap M12 Straight Flute 1.5mm Metric Fine - 1 51 mm - - HSS - - -
RS Stock No. 152-132
BrandRS PRO
TWD794.00
1 Set
Set(s)
Straight Flute Tap 3/8 in BSW Straight Flute Tap - - - 2 - - - HSS - - -
RS Stock No. 813-0200
Mfr. Part No.E238M12
BrandDormer
TWD1,736.00
Each
units
Threading Tap M12 Spiral Flute 1.75mm Metric Right Hand 1 110 mm - Machine Tap HSS 9.0 mm - -
RS Stock No. 240-3057
Mfr. Part No.E500 2.5 X 0.45 3FL TPR
BrandDormer
TWD627.00
Each
units
Threading Tap M2.5 Straight Flute, Taper 0.45mm Metric Right Hand 1 44.5 mm - Machine Tap HSS 2.8 mm - -
RS Stock No. 668-1074
BrandRS PRO
TWD719.00
1 Set
Set(s)
Threading Tap M5 Straight Flute 0.8mm Metric Left Hand 1 58 mm - - HSS 5 mm - -
RS Stock No. 522-7654
BrandRS PRO
TWD1,781.00
Each
units
Threading Tap M20 Second, Straight Flute 1.5mm Metric Fine - 1 112 mm - - HSS 13.95 mm - -
RS Stock No. 752-5275
Mfr. Part No.EX00M3.5
BrandDormer
TWD793.00
Each
units
Threading Tap M3.5 Spiral Flute 0.6mm Metric Right Hand 1 56 mm - Machine Tap HSS-E 4 mm - -
RS Stock No. 813-0281
Mfr. Part No.E255M6
BrandDormer
TWD910.00
Each
units
Threading Tap M6 Spiral Point 1.0mm Metric Right Hand 1 80 mm - Machine Tap HSS 6.0 mm - -