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 25
- Approved Vendor 3/8"-24 UNF HSS Left 4 Flute Bottoming Tap SKU 22687 $9.65
- Approved Vendor 3/8"-24 UNF HSS Left 4 Flute Taper Tap SKU 22689 $9.65
- Approved Vendor 3/8"-24 UNF HSS Plug Tap SKU 22690 $5.81
- 3/8"-24 UNF HSS Plug Tap, Tap America SKU 22691 $8.02
- Approved Vendor 3/8"-24 UNF HSS Taper Tap SKU 22692 $5.81
- 3/8"-24 UNF HSS Taper Tap, Tap America SKU 22693 $8.02
- 3/8"-24 UNF Tin-Coated 3 Flute Spiral Point Tap, Tap America SKU 22694 $18.75
- Approved Vendor 3/8"-24 UNF X 1" OD HSS Left Round Adjustable Die SKU 22696 $30.27
- Approved Vendor 3/8"-24 UNF X 1" OD HSS Round Adjustable Die SKU 22697 $12.70
- Approved Vendor 3/8"-24 UNF X 1-1/2" OD HSS Left Round Adjustable Die SKU 22698 $47.18
- Approved Vendor 3/8"-24 UNF X 1-1/2" OD HSS Round Adjustable Die SKU 22699 $20.46
- Approved Vendor 3/8"-24 UNF X 2" OD HSS Round Adjustable Die SKU 22700 $37.08
- Approved Vendor 3/8"-24 x 6" HSS Pulley Tap SKU 22701 $34.69
- Approved Vendor 3/8"-24 x 6" HSS Spiral Point Tap SKU 22702 $35.88
- Approved Vendor 3/8"-26 UNS X 1" OD HSS Round Adjustable Die SKU 22736 $33.01
- Approved Vendor 3/8"-27 UNS Carbon Steel Hex Die SKU 22737 $37.00
- Approved Vendor 3/8"-27 UNS HSS Plug Tap SKU 22738 $20.10
- Approved Vendor 3/8"-27 UNS X 1-1/2" OD HSS Round Adjustable Die SKU 22739 $51.96
- Approved Vendor 3/8"-28 UNS Carbon Steel Hex Die SKU 22740 $37.00
- Approved Vendor 3/8"-28 UNS HSS Plug Tap SKU 22741 $20.10
- Approved Vendor 3/8"-28 UNS X 1-1/2" OD HSS Round Adjustable Die SKU 22742 $51.96
- Approved Vendor 3/8"-30 UNS HSS Plug Tap SKU 22744 $20.10
- Approved Vendor 3/8"-32 UNS Carbon Steel Hex Die SKU 22745 $37.00
- Approved Vendor 3/8"-32 UNS HSS Plug Tap SKU 22746 $20.10
- Approved Vendor 3/8"-32 UNS X 1" OD HSS Round Adjustable Die SKU 22747 $33.01
- Approved Vendor 3/8"-32 UNS X 1-1/2" OD HSS Round Adjustable Die SKU 22748 $51.96
- Approved Vendor 3/8"-36 UNS HSS Plug Tap SKU 22749 $20.10
- Approved Vendor 3/8"-36 UNS X 1" OD HSS Round Adjustable Die SKU 22750 $33.01
- Approved Vendor 3/8"-40 UNS Carbon Steel Hex Die SKU 22751 $37.00
- Approved Vendor 3/8"-40 UNS HSS Plug Tap SKU 22752 $20.10
- Approved Vendor 3/8"-40 UNS X 1" OD HSS Round Adjustable Die SKU 22753 $33.01
- Approved Vendor 3/8"-48 UNS HSS Plug Tap SKU 22754 $20.10
- Approved Vendor 3/8"-48 UNS X 1" OD HSS Round Adjustable Die SKU 22755 $33.01
- Approved Vendor 3/8"-48 UNS X 1-1/2" OD HSS Round Adjustable Die SKU 22756 $51.96
- Approved Vendor 3/8"-56 UNS X 1" OD HSS Round Adjustable Die SKU 22759 $33.01
- Approved Vendor 3/8"-64 UNS X 1" OD HSS Round Adjustable Die SKU 22764 $33.01
- Approved Vendor 3/8"-72 UNS X 1" OD HSS Round Adjustable Die SKU 22765 $33.01
- Approved Vendor 3/8"-80 UNS X 1" OD HSS Round Adjustable Die SKU 22766 $33.01
- Alfa Tool 3/8-16 HSS Alfa Usa Spiral Fluted Tap SKU SFTP170934 $22.14
- Alfa Tool 3/8-16 HSS Alfa Usa Spiral Fluted Tap Bottoming SKU SFTB170934 $22.14
- Alfa Tool 3/8-16 HSS Combination Drill Tap 1/4 Shank SKU DTML66111 $28.88
- Alfa Tool 3/8-16 HSS Spiral Pointed Tap .005 Oversized SKU SPTO71532 $10.64
- Alfa Tool 3/8-16 HSS Usa Spiral Pointed Tap SKU SPT170132 $9.50
- Alfa Tool 3/8-18 HSS NPT Screw Thread Insert Tap SKU STNPT66593 $102.84
- Alfa Tool 3/8-24 HSS Alfa Usa Spiral Fluted Tap SKU SFTP170935 $22.14
- Alfa Tool 3/8-24 HSS Alfa Usa Spiral Fluted Tap Bottoming SKU SFTB170935 $22.14
- Alfa Tool 3/8-24 HSS Combination Drill Tap 1/4 Shank SKU DTML66112 $28.88
- Alfa Tool 3/8-24 HSS Spiral Pointed Tap .005 Oversized SKU SPTO71533 $10.64