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 17
- Alfa Tool 15/16-18 HSS Special Thread Tap Bottoming SKU HTSPB71395 $66.54
- Alfa Tool 15/16-18 HSS Special Thread Tap Plug SKU HTSPP71395 $66.54
- Alfa Tool 15/16-20 HSS Special Thread Tap Bottoming SKU HTSPB71396 $73.24
- Approved Vendor 15/32" HSS Spiral Flute Hand Expansion Reamer SKU 18658 $165.90
- Approved Vendor 15/32"-32 UNS HSS Plug Tap SKU 18691 $23.50
- Approved Vendor 15/32"-32 UNS X 1-1/2" OD HSS Round Adjustable Die SKU 18692 $51.96
- Milwaukee 15T 1000 MCM Al P-Die SKU 495-49-15-P000 $556.36
- Milwaukee 15T 1000 MCM Cu P-Die SKU 495-49-15-P000C $556.38
- Milwaukee 15T 750 MCM Cu P-Die SKU 495-49-15-P750C $556.36
- Milwaukee 15T 800 MCM Cu P-Die SKU 495-49-15-P800C $556.36
- Alfa Tool 16 X 1.50mm HSS Metric Tap Bottoming Eco Pro SKU HSMTB271038 $31.00
- Alfa Tool 16 X 1.5mm HS Usa Spiral Pointed Tap SKU SPTM170173 $39.14
- Alfa Tool 16 X 2.0mm HS Usa Spiral Pointed Tap SKU SPTM170172 $39.14
- Approved Vendor 17/32" HSS Spiral Flute Hand Expansion Reamer SKU 18839 $178.72
- Approved Vendor 17/32" HSS Spiral Flute Hand Reamer SKU 18840 $61.57
- Alfa Tool 18 X 1.5mm HSS Metric Tap Bottoming Eco Pro SKU HSMTB271042 $37.54
- Alfa Tool 18 X 2.0mm HSS Metric Tap Bottoming Eco Pro SKU HSMTB271040 $37.54
- Alfa Tool 18 X 2.5mm HS Usa Spiral Pointed Tap SKU SPTM170174 $60.70
- Approved Vendor 19/32" HSS Spiral Flute Hand Expansion Reamer SKU 18995 $190.69
- Approved Vendor 19/32" HSS Spiral Flute Hand Reamer SKU 18996 $65.81
- Alfa Tool 2 5/8-8 Carbon Steel Rethreading Hex Die SKU CSRTD70763 $263.94
- DeWalt 2 Aluminum U-Die Set SKU 115-DCE31002AL $192.29
- Alfa Tool 2 HSS Spiral Flute Pipe Reamer SKU HSPR70359 $236.98
- Alfa Tool 2 X 0.4mm HS Usa Spiral Pointed Tap SKU SPTM170153 $18.20
- Alfa Tool 2 X 0.4mm HSS Metric Tap Bottoming Eco Pro SKU HSMTB271004 $11.66
- Alfa Tool 2" - 8 Carbon Steel Rethreading Hex Die SKU CSRTD70758 $140.22
- Approved Vendor 2" HSS 4MT Spiral Flute Bridge Reamer SKU 19103 $520.76
- Approved Vendor 2" HSS Spiral Flute Taper Pipe Reamer SKU 19108 $294.95
- Approved Vendor 2" NPS HSS Straight Pipe Tap SKU 19113 $279.47
- Approved Vendor 2" NPT Carbon Steel Pipe Tap SKU 19114 $108.25
- Approved Vendor 2" NPT HSS Pipe Tap, Qualtech SKU 19115 $269.25
- 2" NPT HSS Pipe Tap, Tap America SKU 19116 $348.02
- Approved Vendor 2" NPT Interrupted Thread HSS NPT Pipe Tap SKU 19117 $373.66
- Approved Vendor 2" X 4" Carbon Steel Square NPT Pipe Die SKU 19138 $110.45
- Approved Vendor 2"-1/2-8 NPT Carbon Steel Hex Pipe Die SKU 19139 $410.66
- Approved Vendor 2"-11-1/2 NPT Carbon Steel Hex Pipe Die SKU 19144 $245.33
- Approved Vendor 2"-12 UNS Carbon Steel Hex Die SKU 19145 $171.25
- Approved Vendor 2"-12 UNS HSS Plug Tap SKU 19146 $339.45
- Approved Vendor 2"-12 UNS X 3" OD HSS Round Adjustable Die SKU 19147 $232.96
- Approved Vendor 2"-4-1/2 Carbon Steel Square Bolt Die SKU 19151 $492.10
- Approved Vendor 2"-4-1/2 UNS Carbon Steel Hex Die SKU 19152 $179.03
- Approved Vendor 2"-4-1/2 UNS HSS Plug Tap SKU 19153 $339.45
- Approved Vendor 2"-4-1/2 UNS X 3" OD HSS Round Adjustable Die SKU 19154 $232.96
- Approved Vendor 2"-8 UNS Carbon Steel Hex Die SKU 19159 $142.22
- Approved Vendor 2"-8 UNS HSS Plug Tap SKU 19160 $251.57
- Approved Vendor 2"-8 UNS X 3" OD HSS Round Adjustable Die SKU 19161 $232.96
- Alfa Tool 2-1/2 - 8 Carbon Steel Rethreading Hex Die SKU CSRTD70762 $222.04
- Approved Vendor 2-1/2 NPT Carbon Steel Pipe Tap SKU 19184 $253.52