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 8

• Alfa Tool 1-3/8-12 HSS Eco Pro Hand Tap-Bottoming SKU HTB270058 $149.24
• Alfa Tool 1-3/8-12 HSS Eco Pro Hand Tap-Taper SKU HTT270058 $149.24
• Alfa Tool 1-3/8-14 HSS Special Thread Tap Bottoming SKU HTSPB71452 $160.40
• Alfa Tool 1-3/8-18 HSS Special Thread Tap Bottoming SKU HTSPB71454 $160.40
• Alfa Tool 1-3/8-20 HSS Special Thread Tap Bottoming SKU HTSPB71455 $160.40
• Alfa Tool 1-3/8-24 HSS Special Thread Tap Bottoming SKU HTSPB71456 $160.40
• Alfa Tool 1-3/8-6 HSS Alfa Usa Hand Tap-Bottoming SKU HTB170057 $214.22
• Alfa Tool 1-3/8-6 HSS Eco Pro Hand Tap-Bottoming SKU HTB270057 $149.24
• Alfa Tool 1-3/8-6 HSS Eco Pro Hand Tap-Taper SKU HTT270057 $149.24
• Alfa Tool 1-3/8-8 HSS Special Thread Tap Bottoming SKU HTSPB71450 $189.90
• Alfa Tool 1-5/16-14 HSS Special Thread Tap Bottoming SKU HTSPB71446 $150.90
• Alfa Tool 1-5/16-18 HSS Special Thread Tap Bottoming SKU HTSPB71448 $150.90
• Alfa Tool 1-5/8 - 8 Carbon Steel Rethreading Hex Die SKU CSRTD70755 $79.32
• Alfa Tool 1-5/8-12 HSS Special Thread Tap Bottoming SKU HTSPB71475 $235.94
• Alfa Tool 1-5/8-16 HSS Special Thread Tap Bottoming SKU HTSPB71476 $235.94
• Alfa Tool 1-5/8-20 HSS Special Thread Tap Bottoming SKU HTSPB71478 $235.94
• Alfa Tool 1-5/8-5-1/2 HSS Special Thread Tap Bottoming SKU HTSPB71473 $288.46
• Alfa Tool 1-5/8-8 HSS Special Thread Tap Bottoming SKU HTSPB71474 $280.24
• Alfa Tool 1-64 HSS Alfa Usa Hand Tap-Bottoming SKU HTB170001 $11.86
• Alfa Tool 1-64 HSS Eco Pro Hand Tap-Bottoming SKU HTB270001 $10.68
• Alfa Tool 1-64 HSS Eco Pro Hand Tap-Taper SKU HTT270001 $10.68
• Alfa Tool 1-64 HSS Usa Spiral Pointed Tap SKU SPT170101 $14.28
• Approved Vendor 1-7/16"-8 UNS HSS Plug Tap SKU 13615 $150.23
• Alfa Tool 1-7/16-16 HSS Special Thread Tap Bottoming SKU HTSPB71458 $188.72
• Alfa Tool 1-7/8 - 8 Carbon Steel Rethreading Hex Die SKU CSRTD70757 $140.22
• Approved Vendor 1-7/8" HSS 4MT Spiral Flute Bridge Reamer SKU 13642 $448.20
• Approved Vendor 1-7/8"-12 UNS X 3" OD HSS Round Adjustable Die SKU 13660 $232.96
• Approved Vendor 1-7/8"-8 UNS Carbon Steel Hex Die 8 Pitch SKU 13661 $129.90
• Approved Vendor 1-7/8"-8 UNS HSS Plug Tap SKU 13662 $214.08
• Approved Vendor 1-7/8"-8 UNS X 3" OD HSS Round Adjustable Die SKU 13663 $232.96
• Alfa Tool 1-7/8-12 HSS Special Thread Tap Bottoming SKU HTSPB71495 $304.52
• Alfa Tool 1-7/8-16 HSS Special Thread Tap Bottoming SKU HTSPB71496 $304.52
• Alfa Tool 1-7/8-5 HSS Special Thread Tap Bottoming SKU HTSPB71493 $358.96
• Alfa Tool 1-7/8-8 HSS Special Thread Tap Bottoming SKU HTSPB71494 $348.70
• Alfa Tool 1-72 HSS Alfa Usa Hand Tap-Bottoming SKU HTB170002 $11.86
• Alfa Tool 1-72 HSS Eco Pro Hand Tap-Bottoming SKU HTB270002 $10.68
• Alfa Tool 1-72 HSS Eco Pro Hand Tap-Taper SKU HTT270002 $10.68
• Alfa Tool 1-72 HSS Usa Spiral Pointed Tap SKU SPT170102 $14.28
• Alfa Tool 1-8 Carbon Steel Hand Tap Taper SKU CSHTT70551 $21.00
• Alfa Tool 1-8 HSS Eco Pro Hand Tap-Bottoming SKU HTB270050 $58.74
• Alfa Tool 1-8 HSS Eco Pro Hand Tap-Taper SKU HTT270050 $58.74
• Alfa Tool 1-8 HSS Eco Spiral Pointed Tap SKU SPT270146 $66.60
• Alfa Tool 1-8 HSS Hand Tap .005 Oversize SKU HTO71450 $69.68
• Alfa Tool 1-8 HSS Screw Thread Insert Taps SKU ST66549 $242.64
• Alfa Tool 1-8 HSS Usa Spiral Pointed Tap SKU SPT170146 $123.12
• Alfa Tool 1-8 Multi Purpose Spiral Fluted Tap SKU HPMP70953 $199.52
• Alfa Tool 1-8 Multi Purpose Spiral Pointed Tap SKU HPMP90153 $187.66
• Approved Vendor 1-9/16" HSS 4MT Spiral Flute Bridge Reamer SKU 13705 $352.34

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