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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Part Details Brand Set Type Maximum Tap Size Minimum Tap Size Number of Pieces Material Set Contents
RS PRO 3 Piece M5 HSS Hand Tap Set RS Pro Hand Tap M5 M5 3 HSS Taper Tap; Plug Tap and Bottom Tap
Dormer 3 Piece M6 HSS Straight Flute Tap Set
  • RS Stock No. 241-4085
  • Brand Dormer
  • Mfr. Part No. E500 6.0 X 1.00 3FL SET3
Dormer Straight Flute Tap M6 M6 3 HSS Taper Tap; Plug Tap and Bottom Tap
RS PRO 3 Piece M8 HSS Hand Tap Set RS Pro Hand Tap M8 M8 3 HSS Plug Tap, Second Tap, Taper Tap
RS PRO 3 Piece M3 HSS Hand Tap Set RS Pro Hand Tap M3 M3 3 HSS Taper Tap; Plug Tap and Bottom Tap
EVENTUS 21 Piece M12 HSS Hand Tap Set EVENTUS Hand Tap M12 M3 21 HSS Taper Taps: M3; M4; M5; M6; M8; M10; M12; Second Taps: M3; M4; M5; M6; M8; M10; M12; Plug Taps: M3; M4; M5; M6; M8; M10; M12 Plug
RS PRO 2 Piece M16 HSS Straight Flute Tap Set RS Pro Straight Flute Tap M16 M16 2 HSS Taper Tap and Plug Tap
RS PRO 3 Piece M4 HSS Hand Tap Set RS Pro Hand Tap M4 M4 3 HSS Taper Tap; Second Tap and Plug Tap
Dormer 3 Piece M5 HSS Straight Flute Tap Set
  • RS Stock No. 241-4079
  • Brand Dormer
  • Mfr. Part No. E500 5.0 X 0.80 3FL SET3
Dormer Straight Flute Tap M5 M5 3 HSS Taper Tap; Plug Tap and Bottom Tap
EVENTUS 3 Piece M8 HSS Hand Tap Set EVENTUS Hand Tap M8 M8 3 HSS Taper Tap; Second Tap and Plug Tap
EVENTUS 3 Piece M5 HSS Hand Tap Set EVENTUS Hand Tap M5 M5 3 HSS Taper Tap; Second Tap and Plug Tap
RS PRO 2 Piece M2 HSS Straight Flute Tap Set RS Pro Straight Flute Tap M2 M2 2 HSS Taper Tap and Plug Tap
RS PRO 2 Piece M4 HSS Straight Flute Tap Set RS Pro Straight Flute Tap M4 M4 2 HSS Taper Tap and Plug Tap
RS PRO 3 Piece M6 HSS Hand Tap Set RS Pro Hand Tap M6 M6 3 HSS Taper Tap; Plug Tap and Bottom Tap
RS PRO 22 Piece M12 HSS Hand Tap Set RS Pro Hand Tap M12 M3 22 HSS Taper Taps: M3; M4; M5; M6; M8; M10; M12; Second Taps: M3; M4; M5; M6; M8; M10; M12; Plug Taps: M3; M4; M5; M6; M8; M10; M12; Tap Wrench
EVENTUS 3 Piece M4 HSS Hand Tap Set EVENTUS Hand Tap M4 M4 3 HSS Taper Tap; Second Tap and Plug Tap
RS PRO 2 Piece M6 HSS Straight Flute Tap Set RS Pro Straight Flute Tap M6 M6 2 HSS Taper Tap and Plug Tap
Dormer 3 Piece M8 HSS Straight Flute Tap Set
  • RS Stock No. 241-4108
  • Brand Dormer
  • Mfr. Part No. E500 8.0 X 1.25 3FL SET3
Dormer Straight Flute Tap M8 M8 3 HSS Taper Tap; Plug Tap and Bottom Tap
RS PRO 2 Piece 1/2 in BSPF HSS Straight Flute Tap Set RS Pro Straight Flute Tap 1/2 in BSPF 1/2 in BSPF 2 HSS Taper Tap and Plug Tap
EVENTUS 3 Piece M3 HSS Hand Tap Set EVENTUS Hand Tap M3 M3 3 HSS Taper Tap; Second Tap and Plug Tap
RS PRO 2 Piece 1/4 in BSP HSS Straight Flute Tap Set RS Pro Straight Flute Tap 1/4 in BSP 1/4 in BSP 2 HSS Taper Tap and Plug Tap
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