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 7

• Alfa Tool 1-1/4-7 HSS Eco Pro Hand Tap-Taper SKU HTT270055 $120.50
• Alfa Tool 1-1/8-12 HSS Eco Pro Hand Tap-Bottoming SKU HTB270054 $94.08
• Alfa Tool 1-1/8-12 HSS Eco Pro Hand Tap-Taper SKU HTT270054 $94.08
• Alfa Tool 1-1/8-20 HSS Special Thread Tap Bottoming SKU HTSPB71423 $103.64
• Alfa Tool 1-1/8-24 HSS Special Thread Tap Bottoming SKU HTSPB71424 $103.64
• Alfa Tool 1-1/8-27 HSS Special Thread Tap Bottoming SKU HTSPB71425 $114.02
• Alfa Tool 1-1/8-32 HSS Special Thread Tap Bottoming SKU HTSPB71426 $114.02
• Alfa Tool 1-1/8-7 HSS Alfa Usa Hand Tap-Bottoming SKU HTB170053 $132.72
• Alfa Tool 1-1/8-7 HSS Eco Pro Hand Tap-Bottoming SKU HTB270053 $94.08
• Alfa Tool 1-1/8-7 HSS Eco Pro Hand Tap-Taper SKU HTT270053 $94.08
• Alfa Tool 1-1/8-8 HSS Special Thread Tap Bottoming SKU HTSPB71419 $122.76
• Alfa Tool 1-11 1/2 HSS NPT Screw Thread Insert Tap SKU STNPT66596 $347.80
• Alfa Tool 1-11.1/2 HSS Alfa Usa NPTF (Dry Seal) Pipe Tap SKU HSNPT180327 $134.60
• Alfa Tool 1-11/16-12 HSS Special Thread Tap Bottoming SKU HTSPB71479 $248.86
• Alfa Tool 1-11/16-16 HSS Special Thread Tap Bottoming SKU HTSPB71480 $248.86
• Alfa Tool 1-12 Carbon Steel Hand Tap Taper SKU CSHTT70552 $21.00
• Alfa Tool 1-12 HSS Eco Pro Hand Tap-Bottoming SKU HTB270051 $58.74
• Alfa Tool 1-12 HSS Eco Pro Hand Tap-Taper SKU HTT270051 $58.74
• Alfa Tool 1-12 HSS Eco Spiral Pointed Tap SKU SPT270147 $66.60
• Alfa Tool 1-12 HSS Hand Tap .005 Oversize SKU HTO71451 $69.68
• Alfa Tool 1-12 HSS Screw Thread Insert Taps SKU ST66549A $242.64
• Alfa Tool 1-12 HSS Usa Spiral Pointed Tap SKU SPT170147 $123.12
• Alfa Tool 1-12 Multi Purpose Spiral Fluted Tap SKU HPMP70954 $199.52
• Alfa Tool 1-14 Carbon Steel Hand Tap Taper SKU CSHTT70553 $21.00
• Alfa Tool 1-14 HSS Eco Pro Hand Tap-Bottoming SKU HTB270052 $58.74
• Alfa Tool 1-14 HSS Eco Pro Hand Tap-Taper SKU HTT270052 $58.74
• Alfa Tool 1-14 HSS Eco Spiral Pointed Tap SKU SPT270148 $66.60
• Alfa Tool 1-14 HSS Hand Tap .005 Oversize SKU HTO71452 $69.68
• Alfa Tool 1-14 HSS Screw Thread Insert Taps SKU ST66549B $242.64
• Alfa Tool 1-15/16-12 HSS Special Thread Tap Bottoming SKU HTSPB71499 $332.20
• Alfa Tool 1-16 HSS Special Thread Tap Bottoming SKU HTSPB71401 $74.60
• Alfa Tool 1-18 HSS Special Thread Tap Bottoming SKU HTSPB71402 $74.60
• Alfa Tool 1-24 HSS Special Thread Tap Bottoming SKU HTSPB71404 $82.16
• Alfa Tool 1-26 HSS Special Thread Tap Bottoming SKU HTSPB71405 $82.16
• Alfa Tool 1-27 HSS Special Thread Tap Bottoming SKU HTSPB71406 $82.16
• Alfa Tool 1-28 HSS Special Thread Tap Bottoming SKU HTSPB71407 $86.60
• Alfa Tool 1-3/16-14 HSS Special Thread Tap Bottoming SKU HTSPB71429 $122.58
• Alfa Tool 1-3/16-16 HSS Special Thread Tap Bottoming SKU HTSPB71430 $122.58
• Alfa Tool 1-3/16-18 HSS Special Thread Tap Bottoming SKU HTSPB71431 $122.58
• Alfa Tool 1-3/16-20 HSS Special Thread Tap Bottoming SKU HTSPB71432 $122.58
• Alfa Tool 1-3/16-24 HSS Special Thread Tap Bottoming SKU HTSPB71433 $122.58
• Alfa Tool 1-3/16-8 HSS Special Thread Tap Bottoming SKU HTSPB71427 $148.10
• Alfa Tool 1-3/4 - 8 Carbon Steel Rethreading Hex Die SKU CSRTD70756 $99.28
• Alfa Tool 1-3/4-16 HSS Special Thread Tap Bottoming SKU HTSPB71489 $282.34
• Alfa Tool 1-3/4-8 HSS Special Thread Tap Bottoming SKU HTSPB71485 $301.68
• Alfa Tool 1-3/8 - 8 Carbon Steel Rethreading Hex Die SKU CSRTD70753 $52.90
• Alfa Tool 1-3/8-10 HSS Special Thread Tap Bottoming SKU HTSPB71451 $195.50
• Alfa Tool 1-3/8-12 HSS Alfa Usa Hand Tap-Bottoming SKU HTB170058 $216.70

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