Taps & Dies
2,000+ products
Expected delivery: Wed, Nov 18
Taps cut internal threads and dies cut external threads. Maintenance techs use them to repair stripped holes and chase damaged threads, and machine shops use them in production. This section covers hand taps in taper, plug and bottoming styles, spiral point (gun) taps for through holes, spiral flute taps for blind holes, NPT pipe taps, thread-forming taps, round adjustable dies, hex rethreading dies, tap wrenches, die stocks and tap and die sets. Threads include UNC, UNF, metric and NPT.
What to check before you order
- Thread size and pitch. Confirm the exact size, for example 1/4"-20 or M6 x 1.0. Our thread sizes guide explains the callouts.
- Hole type. Spiral point taps push chips forward and suit through holes. Spiral flute taps pull chips out and suit blind holes.
- Tap drill. Drill the correct tap drill size first. Too small a hole is a common cause of broken taps.
- Material. HSS taps cover most work. Cobalt or coated taps help in stainless and tougher alloys. Always use tapping fluid in steel.
- Pipe threads. NPT taps are tapered, so tap depth controls the fit.
Common questions
What size drill do I need for a 1/4-20 tap?
A #7 drill is the common choice for about 75 percent thread engagement in a 1/4"-20 hole.
See drill bits, the Alfa Tool line, and all cutting tools.
Taps & Dies: page 18
- Approved Vendor 2-1/2 NPT HSS Pipe Tap, Qualtech SKU 19185 $683.84
- Approved Vendor 2-1/2" X 5" Carbon Steel Square NPT Pipe Die SKU 19198 $190.02
- Approved Vendor 2-1/2"-12 UNS Carbon Steel Hex Die SKU 19199 $229.54
- Approved Vendor 2-1/2"-12 UNS HSS Plug Tap SKU 19200 $577.16
- Approved Vendor 2-1/2"-4 UNS Carbon Steel Hex Die SKU 19201 $229.54
- Approved Vendor 2-1/2"-4 UNS HSS Plug Tap SKU 19202 $577.16
- Approved Vendor 2-1/2"-8 UNS Carbon Steel Hex Die SKU 19203 $204.65
- Approved Vendor 2-1/2"-8 UNS HSS Plug Tap SKU 19204 $487.52
- Alfa Tool 2-1/2-12 HSS Special Thread Tap Bottoming SKU HTSPB71524 $522.02
- Alfa Tool 2-1/2-16 HSS Special Thread Tap Bottoming SKU HTSPB71525 $522.02
- Alfa Tool 2-1/2-8 HSS Special Thread Tap Bottoming SKU HTSPB71523 $597.44
- Approved Vendor 2-1/4"-12 UNS Carbon Steel Hex Die SKU 19220 $202.12
- Approved Vendor 2-1/4"-12 UNS HSS Plug Tap SKU 19221 $420.45
- Approved Vendor 2-1/4"-16 UNS Carbon Steel Hex Die SKU 19222 $202.12
- Approved Vendor 2-1/4"-16 UNS HSS Plug Tap SKU 19223 $420.45
- Approved Vendor 2-1/4"-18 UNS Carbon Steel Hex Die SKU 19224 $202.12
- Approved Vendor 2-1/4"-18 UNS HSS Plug Tap SKU 19225 $420.45
- Approved Vendor 2-1/4"-8 UNS Carbon Steel Hex Die SKU 19226 $175.87
- Approved Vendor 2-1/4"-8 UNS HSS Plug Tap SKU 19227 $374.28
- Alfa Tool 2-1/4-12 HSS Special Thread Tap Bottoming SKU HTSPB71514 $407.36
- Alfa Tool 2-1/4-14 HSS Special Thread Tap Bottoming SKU HTSPB71515 $407.36
- Alfa Tool 2-1/4-4-1/2 HSS Special Thread Tap Bottoming SKU HTSPB71512 $549.28
- Alfa Tool 2-1/4-8 HSS Special Thread Tap Bottoming SKU HTSPB71513 $534.44
- Approved Vendor 2-1/8"-12 UNS Carbon Steel Hex Die SKU 19239 $195.74
- Approved Vendor 2-1/8"-12 UNS HSS Plug Tap SKU 19240 $390.35
- Approved Vendor 2-1/8"-16 UNS HSS Plug Tap SKU 19241 $390.35
- Approved Vendor 2-1/8"-8 UNS Carbon Steel Hex Die 8 Pitch SKU 19242 $167.88
- Approved Vendor 2-1/8"-8 UNS HSS Plug Tap SKU 19243 $342.59
- Alfa Tool 2-1/8-12 HSS Special Thread Tap Bottoming SKU HTSPB71511 $369.12
- Alfa Tool 2-11.1/2 Carbon Steel Taper Pipe Tap NPT SKU CSNPT70569 $142.68
- Alfa Tool 2-12 HSS Special Thread Tap Bottoming SKU HTSPB71505 $322.68
- Alfa Tool 2-20 HSS Special Thread Tap Bottoming SKU HTSPB71509 $322.68
- Approved Vendor 2-3/4"-12 UNS Carbon Steel Hex Die SKU 19278 $257.45
- Approved Vendor 2-3/4"-12 UNS HSS Plug Tap SKU 19279 $702.21
- Approved Vendor 2-3/4"-8 UNS Carbon Steel Hex Die SKU 19280 $231.83
- Approved Vendor 2-3/4"-8 UNS HSS Plug Tap SKU 19281 $619.02
- Alfa Tool 2-3/4-12 HSS Special Thread Tap Bottoming SKU HTSPB71531 $585.40
- Alfa Tool 2-3/4-8 HSS Special Thread Tap Bottoming SKU HTSPB71530 $760.08
- Alfa Tool 2-3/8 - 8 Carbon Steel Rethreading Hex Die SKU CSRTD70761 $222.04
- Approved Vendor 2-3/8"-12 UNS Carbon Steel Hex Die SKU 19291 $223.57
- Approved Vendor 2-3/8"-12 UNS HSS Plug Tap SKU 19292 $450.66
- Approved Vendor 2-3/8"-16 UNS Carbon Steel Hex Die SKU 19293 $223.57
- Approved Vendor 2-3/8"-16 UNS HSS Plug Tap SKU 19294 $450.66
- Approved Vendor 2-3/8"-8 UNS Carbon Steel Hex Die 8 Pitch SKU 19295 $188.66
- Approved Vendor 2-3/8"-8 UNS HSS Plug Tap SKU 19296 $379.45
- Alfa Tool 2-3/8-16 HSS Special Thread Tap Bottoming SKU HTSPB71520 $435.66
- Alfa Tool 2-3/8-8 HSS Special Thread Tap Bottoming SKU HTSPB71518 $552.46
- Alfa Tool 2-4-1/2 HSS Special Thread Tap Bottoming SKU HTSPB71502 $379.12