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 9

• Alfa Tool 1.1/2-11.1/2 Carbon Steel Taper Pipe Tap NPT SKU CSNPT70568 $77.90
• Alfa Tool 1.1/4-11.1/2 Carbon Steel Taper Pipe Tap NPT SKU CSNPT70567 $54.54
• Alfa Tool 1.1/4-11.1/2 HSS Alfa Usa NPTF (Dry Seal) Pipe Tap SKU HSNPT180328 $188.40
• Alfa Tool 1.6 X 0.35mm HS Usa Spiral Pointed Tap SKU SPTM170151 $20.22
• Alfa Tool 1.8 X 0.35mm HS Usa Spiral Pointed Tap SKU SPTM170152 $18.20
• Milwaukee 1/0 Aluminum U Style Die SKU 495-49-16-U01A $122.20
• DeWalt 1/0 Aluminum U-Die Set SKU 115-DCE310010AL $192.29
• DeWalt 1/0 Copper U-Die Set SKU 115-DCE310010CU $192.29
• Approved Vendor 1/16" HSS Spiral Flute Taper Pipe Reamer SKU 13807 $32.06
• Approved Vendor 1/16" NPS HSS Straight Pipe Tap SKU 13816 $23.47
• Approved Vendor 1/16" NPT 1" OD HSS Round Adjustable Pipe Die SKU 13817 $19.91
• Approved Vendor 1/16" NPT Carbon Steel Pipe Tap SKU 13818 $4.71
• Approved Vendor 1/16" NPT HSS Pipe Tap, Qualtech SKU 13819 $16.35
• 1/16" NPT HSS Pipe Tap, Tap America SKU 13820 $29.92
• Approved Vendor 1/16"-27 NPS 1" OD HSS Round Adjustable Pipe Die SKU 13838 $22.90
• Ridgid 1/2 NC HS Univ Dies SKU LS-00655435-2 $518.97
• Approved Vendor 1/2 x 1-5/8 USA Made E-Z Anchor Zinc Die Cast for use w/#6, 7, & 8 Screws SKU 14426 $1.11
• Milwaukee 1/2" Alloy NPT PPT Forged Alum Die Head SKU 495-48-36-1307 $175.14
• Milwaukee 1/2" Hi-SPD NPT PPT Forged Alum Die Head SKU 495-48-36-1007 $265.18
• Approved Vendor 1/2" HSS 2MT Spiral Flute Bridge Reamer SKU 14499 $42.46
• Approved Vendor 1/2" HSS Spiral Flute Hand Expansion Reamer SKU 14526 $165.90
• Approved Vendor 1/2" HSS Spiral Flute Hand Reamer SKU 14527 $49.54
• Approved Vendor 1/2" HSS Spiral Flute Taper Pipe Reamer SKU 14528 $57.85
• Approved Vendor 1/2" Long Lag Shield Anchor Die Cast Zinc Alloy SKU 14544 $4.01
• Approved Vendor 1/2" NPS HSS Straight Pipe Tap SKU 14546 $46.37
• Approved Vendor 1/2" NPT 2" OD HSS Round Adjustable Pipe Die SKU 14547 $58.37
• Approved Vendor 1/2" NPT Carbon Steel Pipe Tap SKU 14548 $9.70
• Approved Vendor 1/2" NPT HSS Pipe Tap, Qualtech SKU 14549 $37.94
• 1/2" NPT HSS Pipe Tap, Tap America SKU 14550 $62.38
• Approved Vendor 1/2" NPT Interrupted Thread HSS NPT Pipe Tap SKU 14551 $63.77
• Approved Vendor 1/2" Short Lag Shield Anchor Die Cast Zinc Alloy SKU 14560 $3.02
• Approved Vendor 1/2" X 2" Carbon Steel Square NPT Pipe Die SKU 14648 $64.57
• Approved Vendor 1/2" X 2-1/2" Carbon Steel Square NPT Pipe Die SKU 14654 $78.23
• Approved Vendor 1/2" X 3" Carbon Steel Square NPT Pipe Die SKU 14661 $90.92
• Approved Vendor 1/2"-12 UNS Carbon Steel Hex Die SKU 14736 $38.20
• Approved Vendor 1/2"-12 UNS HSS Plug Tap SKU 14737 $23.50
• Approved Vendor 1/2"-13 Carbon Steel Square Bolt Die SKU 14754 $78.43
• Milwaukee 1/2"-13 HSS Plug Tap and 27/64" HSS Drill Bit SKU 14799 $17.25
• Milwaukee 1/2"-13 NC 1-Inch Hex Threading Die SKU 495-49-57-5360 $9.25
• Approved Vendor 1/2"-13 STI Tap, High Speed Steel SKU 14809 $42.05
• Milwaukee 1/2"-13 Straight Flute Plug Tap& 27/64"DRILL Bit SKU 495-49-57-5560 $17.95
• Approved Vendor 1/2"-13 UNC Carbon Steel Left Hex Die SKU 14813 $19.77
• Approved Vendor 1/2"-13 UNC HSS 3 Flute Spiral Point Tap SKU 14816 $10.52
• 1/2"-13 UNC HSS 3 Flute Spiral Point Tap, Tap America SKU 14817 $15.28
• Approved Vendor 1/2"-13 UNC HSS Bottoming Tap SKU 14818 $10.49
• 1/2"-13 UNC HSS Bottoming Tap, Tap America SKU 14819 $14.73
• Approved Vendor 1/2"-13 UNC HSS Left 4 Flute Bottoming Tap SKU 14821 $16.37
• Approved Vendor 1/2"-13 UNC HSS Left 4 Flute Plug Tap SKU 14822 $16.37

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