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. 509-0159
Mfr. Part No.03448
BrandEXACT
TWD4,832.00
1 Set
Set(s)
Machine tap M12 Machine tap - - - 6 - - - HSSG-E - - -
RS Stock No. 508-9446
Mfr. Part No.05910
BrandEXACT
TWD1,941.00
1 Set
Set(s)
Combi Tap M10 Combi Tap - - - 7 - - - HSS - - -
RS Stock No. 499-340
Mfr. Part No.4405926
BrandEXACT
TWD554.00
Each
units
Threading Tap M10 Spiral Flute 1.5mm Metric Right Hand 7 59 mm - - HSS 0.25 in - -
RS Stock No. 508-8831
Mfr. Part No.01539
BrandEXACT
TWD850.00
Each
units
Hand Tap 3/8 in UNF Hand Tap - - - 2 - - - HSS - - -
RS Stock No. 508-9597
Mfr. Part No.05902
BrandEXACT
TWD308.00
Each
units
Threading Tap M4 Combination 0.7mm Metric Right Hand 1 39 mm - - HSS 1/4 in - -
RS Stock No. 508-9660
Mfr. Part No.05972
BrandEXACT
TWD772.00
Each
units
Threading Tap M16 Straight Flute 1.5mm Metric Fine - 1 51 mm - - HSS - - -
RS Stock No. 508-9749
Mfr. Part No.05973
BrandEXACT
TWD1,007.00
Each
units
Threading Tap M20 Straight Flute 1.5mm Metric Fine - 1 51 mm - - HSS - - -
RS Stock No. 508-9604
Mfr. Part No.05901
BrandEXACT
TWD419.00
Each
units
Threading Tap M3 Combination 0.5mm Metric Right Hand 1 36 mm - - HSS 1/4 in - -
RS Stock No. 499-324
Mfr. Part No.4405922
BrandEXACT
TWD443.00
Each
units
Threading Tap M4 Spiral Flute 0.7mm Metric Right Hand 7 39 mm - - HSS 0.25 in - -
RS Stock No. 509-0294
Mfr. Part No.05904
BrandEXACT
TWD432.00
Each
units
Threading Tap M6 Combination 1.0mm Metric Right Hand 1 44 mm - - HSS 1/4 in - -
RS Stock No. 508-9676
Mfr. Part No.05906
BrandEXACT
TWD679.00
Each
units
Threading Tap M10 Combination 1.5mm Metric - 1 59 mm - - HSS 1/4 in - -
RS Stock No. 508-8847
Mfr. Part No.01536
BrandEXACT
TWD641.00
Each
units
Hand Tap 5/16 in UNF Hand Tap - - - 2 - - - HSS - - -
RS Stock No. 508-9569
Mfr. Part No.05971
BrandEXACT
TWD513.00
Each
units
Threading Tap M12 Straight Flute 1.5mm Metric Fine - 1 51 mm - - HSS - - -
RS Stock No. 499-283
Mfr. Part No.4405924
BrandEXACT
TWD459.00
Each
units
Threading Tap M6 Spiral Flute 1.0mm Metric Right Hand 7 44 mm - - HSS 0.25 in - -
RS Stock No. 508-8825
Mfr. Part No.01545
BrandEXACT
TWD1,192.00
Each
units
Hand Tap 1/2 in UNF Hand Tap - - - 2 - - - HSS - - -
RS Stock No. 508-8869
Mfr. Part No.01533
BrandEXACT
TWD607.00
Each
units
Hand Tap 1/4 in UNF Hand Tap - - - 2 - - - HSS - - -
RS Stock No. 508-9654
Mfr. Part No.05905
BrandEXACT
TWD532.00
Each
units
Threading Tap M8 Combination 1.25mm Metric Right Hand 1 50 mm - - HSS 1/4 in - -
RS Stock No. 499-447
Mfr. Part No.4405930
BrandEXACT
TWD2,135.00
1 Set
Set(s)
Threading Tap Set - - - - - 7 - - - HSS - - -
RS Stock No. 508-8926
Mfr. Part No.01527
BrandEXACT
TWD607.00
Each
units
Hand Tap #10 UNF Hand Tap - - - 2 - - - HSS - - -
RS Stock No. 499-330
Mfr. Part No.4405925
BrandEXACT
TWD570.00
Each
units
Threading Tap M8 Spiral Flute 1.25mm Metric Right Hand 7 50 mm - - HSS 0.25 in - -