Threading Taps

Threading taps are used to create threads for bolts in materials like metals and plastics. Most commonly used in engineering and manufacturing, threading taps work similar to 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.

Types of Threading Taps

Most commonly classified by three types, taps can be used in different ways for different applications.
•Taper taps, sometimes called 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 unlike a taper tap, plug taps 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. Bottom taps full length cutting shape allow for threads to be cut at the very bottom of a hole for maximum thread length.



Taps come in a range of sizes in both Metric and Imperial dimension and can also 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 Thread Size Type Pitch Thread Standard Thread Direction Overall Length Material Shank Diameter Shank Type Ring Colour For Use With Class of Fit
RS Stock No. 668-1096
BrandRS PRO
TWD211.00
1 Set
Set(s)
3/8-24 Straight Flute - UNF - 63 mm HSS 7 mm Plain - - -
RS Stock No. 602-2157
Mfr. Part No.20186
BrandEVENTUS
TWD1,197.00
Each
units
G1-11 Short Machine - BSP - 100 mm HSS - Plain - - -
RS Stock No. 152-390
BrandRS PRO
TWD200.00
Each
units
M7 Second, Straight Flute 1mm Metric Coarse - - HSS - Plain - - -
RS Stock No. 602-2113
Mfr. Part No.20182
BrandEVENTUS
TWD240.00
Each
units
G1/4-19 Short Machine - BSP - 70 mm HSS - Plain - - -
RS Stock No. 522-7632
BrandRS PRO
TWD931.00
Each
units
M18 Second, Straight Flute 1mm Metric Fine - 97 mm HSS 13.8 mm Plain - - 6H
RS Stock No. 602-2107
Mfr. Part No.20181
BrandEVENTUS
TWD233.00
Each
units
G1/8-28 Short Machine - BSP - 63 mm HSS - Plain - - -
RS Stock No. 427-953
BrandRS PRO
TWD627.00
Each
units
PG16-18 Straight Flute - PG - 80 mm HSS 18 mm Plain - - -
RS Stock No. 152-114
BrandRS PRO
TWD242.00
Each
units
M10 Straight Flute, Taper 1.5mm Metric Coarse - - HSS - Plain - - -
RS Stock No. 152-120
BrandRS PRO
TWD86.00
Each
units
M2 Plug, Straight Flute 0.4mm Metric Coarse - - HSS - Plain - - -
RS Stock No. 602-2135
Mfr. Part No.20184
BrandEVENTUS
TWD584.00
Each
units
G1/2-14 Short Machine - BSP - 80 mm HSS - Plain - - -
RS Stock No. 240-3388
Mfr. Part No.E500 12.0 X 1.75 3FL BOTT
BrandDormer
TWD704.00
Each
units
M12 Plug, Straight Flute 1.75mm Metric Right Hand 89 mm HSS 9 mm Plain - - 6H
RS Stock No. 499-340
Mfr. Part No.4405926
BrandEXACT
TWD644.00
Each
units
M10 Spiral Flute 1.5mm Metric Right Hand 59 mm HSS 0.25 in Hex - 825-25 -
RS Stock No. 668-1093
BrandRS PRO
TWD131.00
1 Set
Set(s)
1/4-28 Straight Flute - UNF - 56 mm HSS 6 mm Plain - - -
RS Stock No. 152-025
BrandRS PRO
TWD255.00
Each
units
M5 Second, Spiral Flute 0.8mm Metric Coarse - - HSS - Plain - - -
RS Stock No. 668-1062
BrandRS PRO
TWD325.00
1 Set
Set(s)
M3 Straight Flute 0.5mm Metric Left Hand 48 mm HSS 3.15 mm Plain - - -
RS Stock No. 240-3300
Mfr. Part No.E500 8.0 X 1.25 3FL SEC
BrandDormer
TWD391.00
Each
units
M8 Second, Straight Flute 1.25mm Metric Right Hand 72 mm HSS 8 mm Plain - - 6H
RS Stock No. 240-3316
Mfr. Part No.E500 8.0 X 1.25 3FL BOTT
BrandDormer
TWD407.00
Each
units
M8 Plug, Straight Flute 1.25mm Metric Right Hand 72 mm HSS 8 mm Plain - - 6H
RS Stock No. 240-3322
Mfr. Part No.E500 10.0 X 1.50 3FL TPC
BrandDormer
TWD446.00
Each
units
M10 Straight Flute, Taper 1.5mm Metric Right Hand 80 mm HSS 10 mm Plain - - 6H
RS Stock No. 389-2032
Mfr. Part No.45126
BrandRecoil
TWD1,734.00
Each
units
M12 Bottoming 1.75mm Metric Coarse - - - - Plain - - -
RS Stock No. 813-0332
Mfr. Part No.E292M4
BrandDormer
TWD1,604.00
Each
units
M4 Fluteless 0.7mm Metric Right Hand 63 mm HSS 4.5 mm Plain - - 6HX