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. 427-931
BrandRS PRO
TWD3,806.00
Each
units
Spiral Flute Tap M12 Spiral Flute Tap - - - 7 - - - HSS - - -
RS Stock No. 668-1096
BrandRS PRO
TWD655.00
1 Set
Set(s)
Threading Tap 3/8-24 Straight Flute - UNF - 1 63 mm - Hand Tap HSS 7 mm - -
RS Stock No. 602-2157
Mfr. Part No.20186
BrandEVENTUS
TWD1,200.00
Each
units
Threading Tap G1-11 Short Machine - BSP - 1 100 mm - - HSS - - -
RS Stock No. 668-1119
BrandRS PRO
TWD5,345.00
1 Set
Set(s)
Hand Tap M12 Hand Tap - - - 22 - - - HSS - - -
RS Stock No. 509-0137
Mfr. Part No.10028
BrandEVENTUS
TWD468.00
Each
units
Hand Tap M12 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 152-390
BrandRS PRO
TWD295.00
Each
units
Threading Tap M7 Second, Straight Flute 1.0mm Metric - 1 - - Hand Tap HSS - - -
RS Stock No. 215-568
BrandRS PRO
TWD655.00
Each
units
Hand Tap M8 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 178-939
Mfr. Part No.7915 UNC
BrandDormer
TWD10,516.00
1 Set
Set(s)
Threading Tap Set - - - - - 22 - - - HSS - - -
RS Stock No. 469-3347
Mfr. Part No.7910 E500
BrandDormer
TWD2,781.00
1 Set
Set(s)
Straight Flute Tap M10 Straight Flute Tap - - - 6 - - - HSS - - -
RS Stock No. 522-7632
BrandRS PRO
TWD1,396.00
Each
units
Threading Tap M18 Second, Straight Flute 1.0mm Metric Fine - 1 97 mm - - HSS 13.8 mm - -
RS Stock No. 602-2113
Mfr. Part No.20182
BrandEVENTUS
TWD263.00
Each
units
Threading Tap G1/4-19 Short Machine - BSP - 1 70 mm - - HSS - - -
RS Stock No. 427-953
BrandRS PRO
TWD641.00
Each
units
Threading Tap PG16-18 Straight Flute - PG - 1 80 mm - Hand Tap HSS 18 mm - -
RS Stock No. 508-9446
Mfr. Part No.05910
BrandEXACT
TWD1,941.00
1 Set
Set(s)
Combi Tap M10 Combi Tap - - - 7 - - - HSS - - -
RS Stock No. 509-0238
Mfr. Part No.10012
BrandEVENTUS
TWD251.00
Each
units
Hand Tap M5 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 602-2135
Mfr. Part No.20184
BrandEVENTUS
TWD580.00
Each
units
Threading Tap G1/2-14 Short Machine - BSP - 1 80 mm - - HSS - - -
RS Stock No. 499-340
Mfr. Part No.4405926
BrandEXACT
TWD554.00
Each
units
Threading Tap M10 Spiral Flute 1.5mm Metric Right Hand 7 59 mm - - HSS 0.25 in - -
RS Stock No. 509-0159
Mfr. Part No.03448
BrandEXACT
TWD4,832.00
1 Set
Set(s)
Machine tap M12 Machine tap - - - 6 - - - HSSG-E - - -
RS Stock No. 152-378
BrandRS PRO
TWD791.00
1 Set
Set(s)
Straight Flute Tap 1/2 in BSPF Straight Flute Tap - - - 2 - - - HSS - - -
RS Stock No. 240-3388
Mfr. Part No.E500 12.0 X 1.75 3FL BOTT
BrandDormer
TWD849.00
Each
units
Threading Tap M12 Plug, Straight Flute 1.75mm Metric Right Hand 1 89 mm - Machine Tap HSS 9 mm - -
RS Stock No. 669-9394
BrandRS PRO
TWD1,761.00
1 Set
Set(s)
1/4 in Hexagon Drive Tap M10 1/4 in Hexagon Drive Tap - - - 6 - - - HSS - - -