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. 215-574
BrandRS PRO
SGD29.15
Each
units
Hand Tap M5 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 668-1100
BrandRS PRO
SGD23.85
1 Set
Set(s)
Threading Tap 1/4-20 Straight Flute - UNC - 1 56 mm - Hand Tap HSS 6 mm - -
RS Stock No. 152-520
BrandRS PRO
SGD18.53
1 Set
Set(s)
Straight Flute Tap M3 Straight Flute Tap - - - 2 - - - HSS - - -
RS Stock No. 668-1093
BrandRS PRO
SGD23.62
1 Set
Set(s)
Threading Tap 1/4-28 Straight Flute - UNF - 1 56 mm - Hand Tap HSS 6 mm - -
RS Stock No. 455-992
BrandRS PRO
SGD15.33
Each
units
Threading Tap M5 Spiral Point 0.8mm Metric - 1 58 mm - - HSS 5 mm - -
RS Stock No. 152-334
BrandRS PRO
SGD15.71
1 Set
Set(s)
Straight Flute Tap #4 UNC Straight Flute Tap - - - 2 - - - HSS - - -
RS Stock No. 152-091
BrandRS PRO
SGD12.82
Each
units
Threading Tap M3.5 Straight Flute, Plug 0.6mm Metric - 1 - - Hand Tap HSS - - -
RS Stock No. 668-1096
BrandRS PRO
SGD25.29
1 Set
Set(s)
Threading Tap 3/8-24 Straight Flute - UNF - 1 63 mm - Hand Tap HSS 7 mm - -
RS Stock No. 669-9407
BrandRS PRO
SGD94.64
1 Set
Set(s)
Threading Tap Set - - - - - 6 - - - - - - -
RS Stock No. 215-546
BrandRS PRO
SGD41.23
Each
units
Hand Tap M10 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 668-1116
BrandRS PRO
SGD44.65
1 Set
Set(s)
Threading Tap 1/2-13 Straight Flute - UNC - 1 80 mm - Hand Tap HSS 9 mm - -
RS Stock No. 522-7654
BrandRS PRO
SGD80.40
Each
units
Threading Tap M20 Second, Straight Flute 1.5mm Metric Fine - 1 112 mm - - HSS 13.95 mm - -
RS Stock No. 152-265
BrandRS PRO
SGD45.59
Each
units
Threading Tap M20 Straight Flute, Second 2.5mm Metric - 1 - - Hand Tap HSS - - -
RS Stock No. 152-558
BrandRS PRO
SGD14.43
Each
units
Threading Tap M2.5 Straight Flute, Plug 0.45mm Metric - 1 - - Hand Tap HSS - - -
RS Stock No. 340-6546
BrandRS PRO
SGD86.05
1 Set
Set(s)
Spiral Point Tap M12 Spiral Point Tap - - - 7 - - - HSS - - -
RS Stock No. 152-316
BrandRS PRO
SGD12.66
Each
units
Threading Tap M4 Straight Flute, Taper 0.7mm Metric - 1 - - Hand Tap HSS - - -
RS Stock No. 668-1078
BrandRS PRO
SGD39.40
1 Set
Set(s)
Threading Tap M6 Straight Flute 1.0mm Metric Left Hand 1 66 mm - - HSS 6.3 mm - -
RS Stock No. 152-508
BrandRS PRO
SGD20.42
Each
units
Threading Tap M3 Spiral Flute, Second 0.5mm Metric - 1 - - - HSS - - -
RS Stock No. 668-1122
BrandRS PRO
SGD382.99
1 Set
Set(s)
Threading Tap Set - - - - - 44 - - - - - - -
RS Stock No. 152-164
BrandRS PRO
SGD12.30
Each
units
Threading Tap M2 Straight Flute, Second 0.4mm Metric - 1 - - Hand Tap HSS - - -
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