Threading Tap Sets

What are tap sets?

Used to cut a thread into a piece of material, taps are used similarly to a drill bit but rather than removing material to create a hole, a tap removes material for an existing holes walls to create a screw or bolt thread. Taps can be used with a tap wrench or with a power tool such as a drill. Forming taps by hand with a tap wrench or T wrench gives you the ability to slowly form the thread ensuring it cuts evenly and smoothly for the best finish. Working with power tools to cut threads can be faster for mass produced work but care must be taken to ensure the thread is cut correctly.

Different types of taps

Taper taps are used to start new threads in materials that have not previously been cut. This gradual tapered cut allows for a smooth start to a new thread. These are commonly used in tougher materials like alloy steel to create less strain on the tap as well as on smaller diameter holes with thinner taps that are more prone to breaking whilst cutting.

Second taps, also known as plug or intermediate taps are used similarly to the taper tap, working to create a fresh new thread in material often not having previously been cut. Second taps have a shorter taper but more threads along the cutting length to create more thread, faster. Second taps are one of the most commonly used taps as they can cut fresh threads in material whilst also re-cutting threads in slightly worn or older crossed threads.

Bottom taps, unlike taper and second taps, are a straight, continuous cutting edge with no taper, meaning threads are cut as soon as the tap enters the hole. The full cutting body allows for threads to be cut right down to the bottom of a blind hole. Blind hole tapping is when a thread is cut into a hole that does not pass fully through a piece of material. The bottom tap is typically only used when an existing thread has been cut either with a taper or second tap or when re-cutting an old thread that may have worn or been cross threaded.


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Description Price Set Type Maximum Tap Size Minimum Tap Size Number of Pieces Material Set Contents
RS Stock No. 151-842
BrandRS PRO
MYR72.70
1 Set
Set(s)
Straight Flute Tap M4 M4 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-328
BrandRS PRO
MYR22.19
1 Set
Set(s)
Straight Flute Tap #2 UNC #2 UNC 2 HSS Taper Tap and Plug Tap
RS Stock No. 151-909
BrandRS PRO
MYR67.95
1 Set
Set(s)
Straight Flute Tap #4 BA #4 BA 2 HSS Taper Tap and Plug Tap
RS Stock No. 151-858
BrandRS PRO
MYR94.42
1 Set
Set(s)
Straight Flute Tap M6 M6 2 HSS Taper Tap and Plug Tap
RS Stock No. 917-2599
BrandRS PRO
MYR374.49
1 Set
Set(s)
Hand tap and drill set - - 29 High Speed Steel -
RS Stock No. 152-356
BrandRS PRO
MYR70.78
1 Set
Set(s)
Straight Flute Tap #6 UNC #6 UNC 2 HSS Taper Tap and Plug Tap
RS Stock No. 828-117
BrandRS PRO
MYR293.81
1 Set
Set(s)
1/4 in Hexagon Drive Tap M10 M3 6 HSS M3; M4; M5; M6; M8; M10
RS Stock No. 152-520
BrandRS PRO
MYR60.79
1 Set
Set(s)
Straight Flute Tap M3 M3 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-439
BrandRS PRO
MYR62.77
1 Set
Set(s)
Straight Flute Tap 1/4 in UNC 1/4 in UNC 2 HSS Taper Tap and Plug Tap
RS Stock No. 151-864
BrandRS PRO
MYR59.84
1 Set
Set(s)
Straight Flute Tap M12 M12 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-362
BrandRS PRO
MYR137.81
1 Set
Set(s)
Straight Flute Tap 3/8 in BSF 3/8 in BSF 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-132
BrandRS PRO
MYR117.69
1 Set
Set(s)
Straight Flute Tap 3/8 in BSW 3/8 in BSW 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-457
BrandRS PRO
MYR29.27
1 Set
Set(s)
Straight Flute Tap #8 BA #8 BA 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-479
BrandRS PRO
MYR93.23
1 Set
Set(s)
Straight Flute Tap M5 M5 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-334
BrandRS PRO
MYR56.88
1 Set
Set(s)
Straight Flute Tap #4 UNC #4 UNC 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-378
BrandRS PRO
MYR118.61
1 Set
Set(s)
Straight Flute Tap 1/2 in BSPF 1/2 in BSPF 2 HSS Taper Tap and Plug Tap
RS Stock No. 151-915
BrandRS PRO
MYR100.45
1 Set
Set(s)
Straight Flute Tap M20 M20 2 HSS Taper Tap and Plug Tap
RS Stock No. 151-921
BrandRS PRO
MYR61.99
1 Set
Set(s)
Straight Flute Tap M2.5 M2.5 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-435
BrandRS PRO
MYR127.16
1 Set
Set(s)
Straight Flute Tap M16 M16 2 HSS Taper Tap and Plug Tap
RS Stock No. 151-820
BrandRS PRO
MYR105.01
1 Set
Set(s)
Straight Flute Tap M7 M7 2 HSS Taper Tap and Plug Tap
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