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. 917-2615
BrandRS PRO
SGD84.93
Each
units
Threading Tap PG29 - - - - 1 100 mm - Hand Tap HSS 28.0 mm - -
RS Stock No. 705-9478
Mfr. Part No.EP01 M4
BrandDormer
SGD37.47
Each
units
Threading Tap M4 Spiral Flute 0.7mm Metric Right Hand 1 63 mm - Machine Tap HSS-XS1 4.5 mm - -
RS Stock No. 509-0222
Mfr. Part No.20007
BrandEVENTUS
SGD13.40
Each
units
Threading Tap M12 Short Machine 1.75mm Metric - 1 75 mm - - HSS - - -
RS Stock No. 299-8757
Mfr. Part No.E105-M10/1,25
BrandDormer
SGD84.70
Each
units
Threading Tap Set M10 Straight Flute 1.25mm Metric Right Hand 2 70 mm - Hand Tap HSS 7 mm - -
RS Stock No. 174-0131
Mfr. Part No.L002E002M4XA002
BrandDormer
SGD35.67
1 Set
Set(s)
Threading Tap Set - Spiral Flute - - - 2 - ISO Machine Tap HSS-E - - -
RS Stock No. 299-8886
Mfr. Part No.E105-M16/1,00
BrandDormer
SGD132.02
Each
units
Threading Tap Set M16 Straight Flute 1.0mm Metric Right Hand 2 70 mm - Hand Tap HSS 12 mm - -
RS Stock No. 136-3958
Mfr. Part No.T200M4
BrandDormer
SGD297.02
Each
units
Threading Tap M4 Straight Flute 0.7mm Metric Right Hand 1 63 mm - Machine Tap Carbide 4.5 mm - -
RS Stock No. 508-9682
Mfr. Part No.20245
BrandEVENTUS
SGD75.93
Each
units
Threading Tap PG16 Short Machine - PG - 1 - - - HSS - - -
RS Stock No. 508-8780
Mfr. Part No.20004
BrandEVENTUS
SGD6.05
Each
units
Threading Tap M6 Short Machine 1.0mm Metric - 1 50 mm - - HSS - - -
RS Stock No. 136-3961
Mfr. Part No.T200M8
BrandDormer
SGD323.63
Each
units
Threading Tap M8 Straight Flute 1.25mm Metric Right Hand 1 90 mm - Machine Tap Carbide 8.0 mm - -
RS Stock No. 269-5515
Mfr. Part No.E100 6N8
BrandDormer
SGD59.15
Each
units
Threading Tap Set M6 Straight Flute 1.0mm Metric Right Hand 3 56 mm - Hand Tap HSS 6 mm - -