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. 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. 152-176
BrandRS PRO
MYR122.45
1 Set
Set(s)
Straight Flute Tap 1/4 in BSP 1/4 in BSP 2 HSS Taper Tap and Plug Tap
RS Stock No. 151-909
BrandRS PRO
MYR57.12
1 Set
Set(s)
Straight Flute Tap #4 BA #4 BA 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-441
BrandRS PRO
MYR56.04
1 Set
Set(s)
Straight Flute Tap #10 BA #10 BA 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-378
BrandRS PRO
MYR100.67
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. 152-160
BrandRS PRO
MYR146.61
1 Set
Set(s)
Straight Flute Tap 3/8 in BSP 3/8 in BSP 2 HSS Taper Tap and Plug Tap
RS Stock No. 151-836
BrandRS PRO
MYR89.13
1 Set
Set(s)
Straight Flute Tap M8 M8 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-186
BrandRS PRO
MYR67.18
1 Set
Set(s)
Straight Flute Tap 3/8 in UNC 3/8 in UNC 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-479
BrandRS PRO
MYR79.14
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. 151-915
BrandRS PRO
MYR85.26
1 Set
Set(s)
Straight Flute Tap M20 M20 2 HSS Taper Tap and Plug Tap
RS Stock No. 151-921
BrandRS PRO
MYR52.12
1 Set
Set(s)
Straight Flute Tap M2.5 M2.5 2 HSS Taper Tap and Plug Tap
RS Stock No. 151-820
BrandRS PRO
MYR89.13
1 Set
Set(s)
Straight Flute Tap M7 M7 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-485
BrandRS PRO
MYR58.91
1 Set
Set(s)
Straight Flute Tap M3.5 M3.5 2 HSS Taper Tap and Plug Tap
RS Stock No. 151-858
BrandRS PRO
MYR80.15
1 Set
Set(s)
Straight Flute Tap M6 M6 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-520
BrandRS PRO
MYR51.11
1 Set
Set(s)
Straight Flute Tap M3 M3 2 HSS Taper Tap and Plug Tap
RS Stock No. 152-356
BrandRS PRO
MYR56.64
1 Set
Set(s)
Straight Flute Tap #6 UNC #6 UNC 2 HSS Taper Tap and Plug Tap
RS Stock No. 917-2599
BrandRS PRO
MYR324.10
1 Set
Set(s)
Hand tap and drill set - - 29 High Speed Steel -
RS Stock No. 152-132
BrandRS PRO
MYR99.90
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. 152-429
BrandRS PRO
MYR49.86
1 Set
Set(s)
Straight Flute Tap 5/16 in UNC 5/16 in UNC 2 HSS Taper Tap and Plug Tap
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