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. 240-3316
Mfr. Part No.E500 8.0 X 1.25 3FL BOTT
BrandDormer
HK$138.81
Each
units
Threading Tap M8 Plug, Straight Flute 1.25mm Metric Right Hand 1 72 mm - Machine Tap HSS 8 mm - -
RS Stock No. 373-853
Mfr. Part No.L126 6500 SET
BrandDormer
HK$2,818.35
1 Set
Set(s)
Threading Tap Set - - - - - 6 - - - HSS - - -
RS Stock No. 240-3041
Mfr. Part No.E500 2.0 X 0.40 3FL BOTT
BrandDormer
HK$199.17
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. 668-1062
BrandRS PRO
HK$177.42
1 Set
Set(s)
Threading Tap M3 Straight Flute 0.5mm Metric Left Hand 1 48 mm - - HSS 3.15 mm - -
RS Stock No. 508-9452
Mfr. Part No.20331
BrandEVENTUS
HK$642.14
1 Set
Set(s)
Short machine tap M12 Short machine tap - - - 16 - - - HSS - - -
RS Stock No. 389-2032
Mfr. Part No.45126
BrandRecoil
HK$452.37
Each
units
Threading Tap M12 Bottoming 1.75mm Metric - 1 - - - - - - -
RS Stock No. 240-3108
Mfr. Part No.E500 3.0 X 0.50 3FL SEC
BrandDormer
HK$129.93
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. 389-1966
Mfr. Part No.45036
BrandRecoil
HK$208.49
Each
units
Threading Tap M3 Bottoming 0.5mm Metric - 1 - - - - - - -
RS Stock No. 668-1074
BrandRS PRO
HK$188.80
1 Set
Set(s)
Threading Tap M5 Straight Flute 0.8mm Metric Left Hand 1 58 mm - - HSS 5 mm - -
RS Stock No. 299-9895
Mfr. Part No.E500-M14/2,00
BrandDormer
HK$265.07
Each
units
Threading Tap M14 Straight Flute 2.0mm Metric Right Hand 1 95 mm - Machine Tap HSS 11.2 mm - -
RS Stock No. 241-4338
Mfr. Part No.E515 1/2 X 13 SET
BrandDormer
HK$606.74
1 Set
Set(s)
Straight Flute Tap 1/2 in UNC Straight Flute Tap - - - 3 - - - HSS - - -
RS Stock No. 299-9176
Mfr. Part No.E207-M10
BrandDormer
HK$261.90
Each
units
Threading Tap M10 Spiral Flute 1.5mm Metric Right Hand 1 100 mm - Machine Tap HSS-E 10 mm - -
RS Stock No. 300-0081
Mfr. Part No.E513-M5/0,50
BrandDormer
HK$182.06
Each
units
Threading Tap M5 Straight Flute 0.5mm Metric Fine Right Hand 1 58 mm - Machine Tap HSS 5 mm - -
RS Stock No. 509-0294
Mfr. Part No.05904
BrandEXACT
HK$120.43
Each
units
Threading Tap M6 Combination 1.0mm Metric Right Hand 1 44 mm - - HSS 1/4 in - -
RS Stock No. 509-0058
Mfr. Part No.10020
BrandEVENTUS
HK$73.94
Each
units
Hand Tap M8 Hand Tap - - - 3 - - - HSS - - -
RS Stock No. 269-5290
Mfr. Part No.E100 2,5N8
BrandDormer
HK$400.22
Each
units
Threading Tap Set M2.5 Straight Flute 0.45mm Metric Right Hand 3 40 mm - Hand Tap HSS 2.8 mm - -
RS Stock No. 373-831
Mfr. Part No.E650 M10
BrandDormer
HK$656.74
Each
units
Threading Tap M10 Combination 1.5mm Metric Right Hand 1 108 mm - - HSS 10 mm - -
RS Stock No. 241-4300
Mfr. Part No.E515 5/16 X 18 SET
BrandDormer
HK$382.73
1 Set
Set(s)
Straight Flute Tap 5/16 in UNC Straight Flute Tap - - - 3 - - - HSS - - -
RS Stock No. 705-9453
Mfr. Part No.EX01 M6
BrandDormer
HK$242.66
Each
units
Threading Tap M6 Spiral flute 1.0mm Metric Right Hand 1 80 mm - Machine Tap HSS-E 6 mm - -
RS Stock No. 508-9496
Mfr. Part No.10016
BrandEVENTUS
HK$71.52
Each
units
Hand Tap M6 Hand Tap - - - 3 - - - HSS - - -