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. 508-9474
Mfr. Part No.10701
BrandEVENTUS
MYR300.63
1 Set
Set(s)
Hand Tap M12 Hand Tap - - - 21 - - - HSS - - -
RS Stock No. 248-5560
BrandRS PRO
MYR418.51
Each
units
Threading Tap Set - - - - - 12 - - - - - - -
RS Stock No. 375-9323
BrandRS PRO
MYR382.61
1 Set
Set(s)
Hand Tap, Tap Set M12 Hand Tap, Tap Set - - - 8 - - - HSS - - -
RS Stock No. 241-4265
Mfr. Part No.E515 NO.4 X 40 SET
BrandDormer
MYR288.80
1 Set
Set(s)
Straight Flute Tap #4 UNC Straight Flute Tap - - - 3 - - - HSS - - -
RS Stock No. 215-574
BrandRS PRO
MYR95.60
Each
units
Hand Tap M5 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 508-9749
Mfr. Part No.05973
BrandEXACT
MYR149.28
Each
units
Threading Tap M20 Straight Flute 1.5mm Metric Fine - 1 51 mm - - HSS - - -
RS Stock No. 508-9840
Mfr. Part No.00055
BrandEVENTUS
MYR28.02
Each
units
Threading Tap M3.5 Plug 0.6mm Metric - 1 45 mm - Hand Tap HSS 4 mm - -
RS Stock No. 455-908
BrandRS PRO
MYR53.22
Each
units
Threading Tap M2.5 Spiral Point 0.45mm Metric - 1 44.5 mm - - HSS 2.8 mm - -
RS Stock No. 668-1122
BrandRS PRO
MYR1,256.05
1 Set
Set(s)
Threading Tap Set - - - - - 44 - - - - - - -
RS Stock No. 508-9575
Mfr. Part No.10024
BrandEVENTUS
MYR50.75
Each
units
Hand Tap M10 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 668-1119
BrandRS PRO
MYR800.83
1 Set
Set(s)
Hand Tap M12 Hand Tap - - - 22 - - - HSS - - -
RS Stock No. 509-0058
Mfr. Part No.10020
BrandEVENTUS
MYR39.30
Each
units
Hand Tap M8 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 178-923
Mfr. Part No.7915 UNF
BrandDormer
MYR1,687.32
1 Set
Set(s)
Threading Tap Set - - - - - 22 - - - HSS - - -
RS Stock No. 694-009
BrandRS PRO
MYR862.34
Each
units
Threading Tap Set - - - - - 29 - - - HSS - - -
RS Stock No. 152-564
BrandRS PRO
MYR41.19
Each
units
Threading Tap M2.5 Second, Straight Flute 0.45mm Metric - 1 - - Hand Tap HSS - - -
RS Stock No. 215-530
BrandRS PRO
MYR94.99
Each
units
Hand Tap M6 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 508-9446
Mfr. Part No.05910
BrandEXACT
MYR290.84
1 Set
Set(s)
Combi Tap M10 Combi Tap - - - 7 - - - HSS - - -
RS Stock No. 668-1071
BrandRS PRO
MYR114.68
1 Set
Set(s)
Threading Tap M4 Straight Flute 0.7mm Metric Left Hand 1 53 mm - - HSS 4 mm - -
RS Stock No. 240-3108
Mfr. Part No.E500 3.0 X 0.50 3FL SEC
BrandDormer
MYR71.54
Each
units
Threading Tap M3 Second, Straight Flute 0.5mm Metric Right Hand 1 48 mm - Machine Tap HSS 3.15 mm - -
RS Stock No. 509-0250
Mfr. Part No.10008
BrandEVENTUS
MYR38.15
Each
units
Hand Tap M4 Hand Tap - - - 3 - - - HSS - - -
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