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. 193-1558
Mfr. Part No.E334M12
BrandDormer
SGD135.94
Each
units
Threading Tap M12 Spiral Point 1.75mm Metric Left Hand 1 110 mm - Machine Tap HSS-E 9.0 mm - Black
RS Stock No. 752-5266
Mfr. Part No.EX00M3
BrandDormer
SGD33.12
Each
units
Threading Tap M3 Spiral Flute 0.5mm Metric Right Hand 1 56 mm - Machine Tap HSS-E 3.5 mm - -
RS Stock No. 509-0351
Mfr. Part No.10301
BrandEVENTUS
SGD9.62
Each
units
Threading Tap M3 Spiral Point 0.5mm Metric - 1 56 mm - Machine Tap HSS-G 3.5 mm - -
RS Stock No. 174-0135
Mfr. Part No.L002E002M10XA002
BrandDormer
SGD51.19
1 Set
Set(s)
Threading Tap Set - Spiral Flute - - - 2 - ISO Machine Tap HSS-E - - -
RS Stock No. 522-7581
BrandRS PRO
SGD36.46
Each
units
Threading Tap M10 Second, Straight Flute 1.25mm Metric Fine - 1 76 mm - - HSS 9.95 mm - -
RS Stock No. 240-3344
Mfr. Part No.E500 10.0 X 1.50 3FL BOTT
BrandDormer
SGD28.60
Each
units
Threading Tap M10 Plug, Straight Flute 1.5mm Metric Right Hand 1 80 mm - Machine Tap HSS 10 mm - -
RS Stock No. 300-0126
Mfr. Part No.E513-M7/0,75
BrandDormer
SGD22.22
Each
units
Threading Tap M7 Straight Flute 0.75mm Metric Fine Right Hand 1 66 mm - Machine Tap HSS 7.1 mm - -
RS Stock No. 151-971
BrandRS PRO
SGD7.68
1 Set
Set(s)
Straight Flute Tap #10 UNC Straight Flute Tap - - - 2 - - - HSS - - -
RS Stock No. 917-2606
BrandRS PRO
SGD42.43
Each
units
Threading Tap PG21 - - - - 1 90 mm - Hand Tap HSS 22.0 mm - -
RS Stock No. 813-0250
Mfr. Part No.E241M3
BrandDormer
SGD55.25
Each
units
Threading Tap M3 Spiral Point 0.5mm Metric Right Hand 1 56 mm - Machine Tap HSS 3.5 mm - -
RS Stock No. 193-1557
Mfr. Part No.E334M10
BrandDormer
SGD104.12
Each
units
Threading Tap M10 Spiral Point 1.5mm Metric Right Hand 1 100 mm - Machine Tap HSS-E 10.0 mm - Black
RS Stock No. 300-0340
Mfr. Part No.E513-M18/1,50
BrandDormer
SGD98.14
Each
units
Threading Tap M18 Straight Flute 1.5mm Metric Fine Right Hand 1 112 mm - Machine Tap HSS 14 mm - -
RS Stock No. 813-0285
Mfr. Part No.E255M8
BrandDormer
SGD44.66
Each
units
Threading Tap M8 Spiral Point 1.25mm Metric Right Hand 1 90 mm - Machine Tap HSS 8.0 mm - -
RS Stock No. 508-9806
Mfr. Part No.10307
BrandEVENTUS
SGD16.35
Each
units
Threading Tap M12 Spiral Point 1.75mm Metric - 1 110 mm - Machine Tap HSS-G 9 mm - -
RS Stock No. 812-5996
Mfr. Part No.E473M5
BrandDormer
SGD44.73
Each
units
Threading Tap M5 Spiral Flute 0.8mm Metric Right Hand 1 70 mm - Machine Tap HSS 6.0 mm - -
RS Stock No. 174-0130
Mfr. Part No.L002E002M3XA002
BrandDormer
SGD33.85
1 Set
Set(s)
Threading Tap Set - Spiral Flute - - - 2 - ISO Machine Tap HSS-E - - -
RS Stock No. 813-0222
Mfr. Part No.E239M10
BrandDormer
SGD88.67
Each
units
Threading Tap M10 Spiral Flute 1.5mm Metric Right Hand 1 100 mm - Machine Tap HSS 10.0 mm - -
RS Stock No. 240-3041
Mfr. Part No.E500 2.0 X 0.40 3FL BOTT
BrandDormer
SGD34.09
Each
units
Threading Tap M2 Plug, Straight Flute 0.4mm Metric Right Hand 1 41 mm - Machine Tap HSS 2.5 mm - -
RS Stock No. 813-0207
Mfr. Part No.E239M4
BrandDormer
SGD60.45
Each
units
Threading Tap M4 Spiral Flute 0.7mm Metric Right Hand 1 63 mm - Machine Tap HSS 4.5 mm - -
RS Stock No. 455-936
BrandRS PRO
SGD18.85
Each
units
Threading Tap M2 Spiral Point 0.4mm Metric - 1 41 mm - - HSS 2.5 mm - -