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. 752-5339
Mfr. Part No.EP00M2
BrandDormer
SGD38.81
Each
units
Threading Tap M2 Spiral Point 0.4mm Metric Right Hand 1 50 mm - Machine Tap HSS-XS1 2.8 mm - -
RS Stock No. 705-9507
Mfr. Part No.E001M16
BrandDormer
SGD78.78
Each
units
Threading Tap M16 Spiral Point 2.0mm Metric Right Hand 1 102 mm - Machine Tap HSS-XS1 12.5 mm - -
RS Stock No. 193-1554
Mfr. Part No.E334M5
BrandDormer
SGD66.22
Each
units
Threading Tap M5 Spiral Point 0.8mm Metric Left Hand 1 80 mm - Machine Tap HSS-E 6.0 mm - Black
RS Stock No. 174-0118
Mfr. Part No.L001EX00M5XA002
BrandDormer
SGD33.40
1 Set
Set(s)
Threading Tap Set - Spiral Flute - - - 2 - DIN Machine Tap HSS-E - - -
RS Stock No. 299-9615
Mfr. Part No.E500-M1,60/0,35
BrandDormer
SGD48.66
Each
units
Threading Tap M1.6 Straight Flute 0.35mm Metric Right Hand 1 41 mm - Machine Tap HSS 2.5 mm - -
RS Stock No. 240-3029
Mfr. Part No.E500 2.0 X 0.40 3FL TPR
BrandDormer
SGD30.49
Each
units
Threading Tap M2 Straight Flute, Taper 0.4mm Metric Right Hand 1 41 mm - Machine Tap HSS 2.5 mm - -
RS Stock No. 240-3120
Mfr. Part No.E500 3.5 X 0.60 3FL TPR
BrandDormer
SGD20.41
Each
units
Threading Tap M3.5 Straight Flute, Taper 0.6mm Metric Right Hand 1 50 mm - Machine Tap HSS 3.55 mm - -
RS Stock No. 299-9514
Mfr. Part No.E237-M3
BrandDormer
SGD28.53
Each
units
Threading Tap M3 Straight Flute 0.5mm Metric Left Hand 1 56 mm - Machine Tap HSS-E 3.5 mm - -
RS Stock No. 813-0320
Mfr. Part No.E292M2.5
BrandDormer
SGD105.92
Each
units
Threading Tap M2.5 Fluteless 0.45mm Metric Right Hand 1 50 mm - Machine Tap HSS 2.8 mm - -
RS Stock No. 174-0117
Mfr. Part No.L001EX00M4XA002
BrandDormer
SGD34.11
1 Set
Set(s)
Threading Tap Set - Spiral Flute - - - 2 - DIN Machine Tap HSS-E - - -
RS Stock No. 509-0317
Mfr. Part No.10306
BrandEVENTUS
SGD11.97
Each
units
Threading Tap M10 Spiral Point 1.5mm Metric - 1 100 mm - Machine Tap HSS-G 10 mm - -
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