Pipe Pulley Thread Forming

Pipe Pulley Thread Forming

Taper Pipe NPT - For Cast Iron
Taper Pipe NPT - For Cast Iron
Taper Pipe NPT - Spiral Flute
Taper Pipe NPT - Spiral Flute
Thread Forming
Thread Forming
Extension Taper Pipe NPT
Extension Taper Pipe NPT
Pulley Tap
Pulley Tap
Small Shank Extension - Spiral Point Plug
Small Shank Extension - Spiral Point Plug
Straight Pipe - NPS
Straight Pipe - NPS
Taper Pipe - NPTF Dryseal
Taper Pipe - NPTF Dryseal
Taper Pipe - NPTF Dryseal - Interrupted
Taper Pipe - NPTF Dryseal - Interrupted
Taper Pipe NPT
Taper Pipe NPT
Taper Pipe NPT - Interrupted
Taper Pipe NPT - Interrupted

A collection of specialized HSS tap styles for pipe threading, pulley set-screw applications, and chipless thread forming. Available in NPT, NPTF Dryseal, NPS, NC, and NF thread standards.

Thread Forming: Rather than cutting material away, thread forming taps displace it, cold-forming the thread into the hole wall. This produces a stronger thread with no chips to evacuate — ideal for ductile materials and ensures no chip-related jams in blind holes.

Pipe Taps (NPT/NPTF/NPS): Tapered pipe taps cut threads that seal on the taper itself, standard for plumbing and fluid-fitting connections. NPTF Dryseal variants seal without additional sealant; interrupted-thread versions reduce torque and improve chip control in deeper holes.

Pulley Taps: Designed specifically for the shallow, often through-drilled holes used in set-screw applications on pulleys and hubs.

  • Compare SKU Vendor Size Shank Diameter Overall Length H Limit D Limit NC / NF Square Size Square Length Thread Length Number of Lube Grooves Number of Flutes Style Material Coating In Stock Price Quantity
    A77418 ACT 3/4-10 0.5900 6 H3 3 SP/PT Plug HSS ALTiN 7
    $173.80
  • A57658 ACT 1-1/2-11-1/2 1.5 4-1/4 7 NPT - Interrupted HSS TIN Available to Order*
    $286.96
  • A57635 ACT 1-1/4-11-1/2 1.3125 4 5 NPT HSS STEAM OXIDE 21
    $181.55
  • A77515 ACT 1/4-20 0.2550 2-1/2 H5 None Plug HSS Uncoated 73
    $14.94
  • A77419 ACT 3/4-16 0.5900 6 H3 3 SP/PT Plug HSS ALTiN 9
    $173.80
  • A55014 ACT 2-11-1/2 1.875 4-1/2 7 NPT - Interrupted HSS Uncoated 4
    $341.48
  • A54994 ACT 1-1/2-11-1/2 1.5 4-1/4 7 NPT HSS Uncoated 21
    $227.55
  • A77516 ACT 1/4-20 0.2550 2-1/2 H5 None Bottom HSS Uncoated 100
    $14.94
  • A57659 ACT 2-11-1/2 1.875 4-1/2 7 NPT - Interrupted HSS STEAM OXIDE 10
    $506.68
  • A57638 ACT 1-1/2-11-1/2 1.5 4-1/4 7 NPT HSS TIN 14
    $257.82
  • A55045 ACT 6-32 0.097 6 H3 NC .073 3/16 11/16 2 Spiral Point Plug HSS Uncoated 34
    $56.41
  • A77517 ACT 1/4-20 0.2550 2-1/2 H8 None Plug HSS Uncoated 24
    $14.94
  • A77402 ACT 6-32 0.0970 6 H3 2 SP/PT Plug HSS ALTiN 17
    $60.43
  • A57637 ACT 1-1/2-11-1/2 1.5 4-1/4 7 NPT HSS STEAM OXIDE 100
    $243.55
  • A77518 ACT 1/4-20 0.2550 2-1/2 H8 None Bottom HSS Uncoated 100
    $14.94
  • A55046 ACT 8-32 0.123 6 H3 NC .092 1/4 3/4 2 Spiral Point Plug HSS Uncoated 21
    $55.25
  • A54995 ACT 2-11-1/2 1.875 4-1/2 7 NPT HSS Uncoated 20
    $309.60
  • A77403 ACT 8-32 0.1230 6 H3 2 SP/PT Plug HSS ALTiN 12
    $59.27
  • A57640 ACT 2-11-1/2 1.875 4-1/2 7 NPT HSS TIN 9
    $374.37
  • A54857 ACT 5/16-18 0.318 2-23/32 H5 2 Bottoming HSS TiN 29
    $21.91
  • A57639 ACT 2-11-1/2 1.875 4-1/2 7 NPT HSS STEAM OXIDE 9
    $323.50
  • A55047 ACT 10-24 0.136 6 H3 NC .102 1/4 7/8 2 Spiral Point Plug HSS Uncoated 61
    $51.83
  • A54858 ACT 5/16-18 0.318 2-23/32 H7 2 Bottoming HSS TiN 14
    $21.91
  • A55048 ACT 10-32 0.136 6 H3 NF .102 1/4 7/8 2 Spiral Point Plug HSS Uncoated Available to Order*
    $51.83
  • A54859 ACT 5/16-24 0.318 2-23/32 H5 2 Bottoming HSS TiN 15
    $21.91
  • A77404 ACT 10-24 0.1360 6 H3 2 SP/PT Plug HSS ALTiN 17
    $56.71
  • A54860 ACT 5/16-24 0.318 2-23/32 H7 2 Bottoming HSS TiN 10
    $21.91
  • A77405 ACT 10-32 0.1360 6 H3 2 SP/PT Plug HSS ALTiN 2
    $56.71
  • A55933 ACT 5/16-18 0.318 2-23/32 H5 2 Plug HSS TiN 18
    $21.91
  • A55934 ACT 5/16-18 0.318 2-23/32 H7 2 Plug HSS TiN 7
    $21.91
  • A55935 ACT 5/16-24 0.318 2-23/32 H5 2 Plug HSS TiN 5
    $21.91
  • A55936 ACT 5/16-24 0.318 2-23/32 H7 2 Plug HSS TiN 3
    $21.91
  • A77300 ACT 5/16-18 0.3180 2.7188" H5 None Plug HSS Uncoated 52
    $16.66
  • A77301 ACT 5/16-18 0.3180 2.7188" H5 None Bottom HSS Uncoated 100
    $16.66
  • A77302 ACT 5/16-18 0.3180 2.7188" H8 None Plug HSS Uncoated 66
    $16.66
  • A77303 ACT 5/16-18 0.3180 2.7188" H8 None Bottom HSS Uncoated 45
    $16.66
  • A77304 ACT 5/16-24 0.3180 2.7188" H5 None Plug HSS Uncoated 16
    $16.66
  • A77305 ACT 5/16-24 0.3180 2.7188" H5 None Bottom HSS Uncoated 24
    $16.66
  • A77306 ACT 5/16-24 0.3180 2.7188" H7 None Plug HSS Uncoated Available to Order*
    $16.66
  • A77307 ACT 5/16-24 0.3180 2.7188" H7 None Bottom HSS Uncoated 11
    $16.66
  • A77385 ACT 5/16-18 0.3180 2.7188" H8 None Single Thread HSS TiN 16
    $21.18
  • A77386 ACT 5/16-24 0.3180 2.7188" H5 None Single Thread HSS TiN 2
    $21.18
  • A77387 ACT 5/16-24 0.3180 2.7188" H7 None Single Thread HSS TiN 11
    $21.18
  • A77431 ACT 5/16-18 0.3180 2.7188" H8 None Single Thread HSS Uncoated 21
    $16.66
  • A77432 ACT 5/16-24 0.3180 2.7188" H5 None Single Thread HSS Uncoated 15
    $16.66
  • A77433 ACT 5/16-24 0.3180 2.7188" H7 None Single Thread HSS Uncoated 11
    $16.66
  • A54861 ACT 3/8-16 0.381 2-15/16 H5 2 Bottoming HSS TiN 100
    $24.99
  • A54862 ACT 3/8-16 0.381 2-15/16 H7 2 Bottoming HSS TiN 13
    $24.99
  • A54863 ACT 3/8-24 0.381 2-15/16 H5 2 Bottoming HSS TiN 8
    $24.99
  • A54864 ACT 3/8-24 0.381 2-15/16 H7 2 Bottoming HSS TiN 7
    $24.99
  • A55937 ACT 3/8-16 0.381 2-15/16 H5 2 Plug HSS TiN 5
    $24.99
  • A55938 ACT 3/8-16 0.381 2-15/16 H7 2 Plug HSS TiN 5
    $24.99
  • A55939 ACT 3/8-24 0.381 2-15/16 H5 2 Plug HSS TiN 11
    $24.99
  • A55940 ACT 3/8-24 0.381 2-15/16 H7 2 Plug HSS TiN 12
    $24.99
  • A77308 ACT 3/8-16 0.3810 2-15/16 H6 None Plug HSS Uncoated 41
    $19.09
  • A77309 ACT 3/8-16 0.3810 2-15/16 H6 None Bottom HSS Uncoated 100
    $19.09
  • A77310 ACT 3/8-16 0.3810 2-15/16 H8 None Plug HSS Uncoated 52
    $19.09
  • A77311 ACT 3/8-16 0.3810 2-15/16 H8 None Bottom HSS Uncoated 21
    $19.09
  • A77312 ACT 3/8-24 0.3810 2-15/16 H5 None Plug HSS Uncoated 21
    $19.09
  • A77313 ACT 3/8-24 0.3810 2-15/16 H5 None Bottom HSS Uncoated 24
    $19.09
  • A77314 ACT 3/8-24 0.3810 2-15/16 H7 None Plug HSS Uncoated 20
    $19.09
  • A77315 ACT 3/8-24 0.3810 2-15/16 H7 None Bottom HSS Uncoated 23
    $19.09
  • A77388 ACT 3/8-16 0.3810 2-15/16 H6 None Single Thread HSS TiN 100
    $24.15
  • A77389 ACT 3/8-16 0.3810 2-15/16 H8 None Single Thread HSS TiN 7
    $24.15
  • A77390 ACT 3/8-24 0.3810 2-15/16 H5 None Single Thread HSS TiN 2
    $24.15
  • A77391 ACT 3/8-24 0.3810 2-15/16 H7 None Single Thread HSS TiN 2
    $24.15
  • A77434 ACT 3/8-16 0.3810 2-15/16 H6 None Single Thread HSS Uncoated 100
    $19.09
  • A77435 ACT 3/8-16 0.3810 2-15/16 H8 None Single Thread HSS Uncoated 12
    $19.09
  • A77436 ACT 3/8-24 0.3810 2-15/16 H5 None Single Thread HSS Uncoated 15
    $19.09
  • A77437 ACT 3/8-24 0.3810 2-15/16 H7 None Single Thread HSS Uncoated 5
    $19.09
  • A54865 ACT 7/16-14 0.323 3-5/32 H5 4 Bottoming HSS TiN 12
    $37.24
  • A54866 ACT 7/16-14 0.323 3-5/32 H8 4 Bottoming HSS TiN 10
    $37.24
  • A54867 ACT 7/16-20 0.323 3-5/32 H5 4 Bottoming HSS TiN 6
    $37.24
  • A54868 ACT 7/16-20 0.323 3-5/32 H8 4 Bottoming HSS TiN 63
    $37.24
  • A55941 ACT 7/16-14 0.323 3-5/32 H5 4 Plug HSS TiN 4
    $37.24
  • A55942 ACT 7/16-14 0.323 3-5/32 H8 4 Plug HSS TiN 10
    $37.24
  • A55943 ACT 7/16-20 0.323 3-5/32 H5 4 Plug HSS TiN 4
    $37.24
  • A55944 ACT 7/16-20 0.323 3-5/32 H8 4 Plug HSS TiN 20
    $37.24
  • A77316 ACT 7/16-14 0.3230 3.1563" H7 None Plug HSS Uncoated 17
    $28.92
  • A77317 ACT 7/16-14 0.3230 3.1563" H7 None Bottom HSS Uncoated 22
    $28.92
  • A77318 ACT 7/16-14 0.3230 3.1563" H9 None Plug HSS Uncoated 8
    $28.92
  • A77319 ACT 7/16-14 0.3230 3.1563" H9 None Bottom HSS Uncoated 13
    $28.92
  • A77320 ACT 7/16-20 0.3230 3.1563" H5 None Plug HSS Uncoated 21
    $28.92
  • A77321 ACT 7/16-20 0.3230 3.1563" H5 None Bottom HSS Uncoated 23
    $28.92
  • A77322 ACT 7/16-20 0.3230 3.1563" H8 None Plug HSS Uncoated 35
    $28.92
  • A77323 ACT 7/16-20 0.3230 3.1563" H8 None Bottom HSS Uncoated 100
    $28.92
  • A54869 ACT 1/2-13 0.367 3-3/8 H5 6 Bottoming HSS TiN 21
    $40.78
  • A54870 ACT 1/2-13 0.367 3-3/8 H8 6 Bottoming HSS TiN 24
    $40.78
  • A54871 ACT 1/2-20 0.367 3-3/8 H5 6 Bottoming HSS TiN 7
    $40.78
  • A54872 ACT 1/2-20 0.367 3-3/8 H8 6 Bottoming HSS TiN 5
    $40.78
  • A55945 ACT 1/2-13 0.367 3-3/8 H5 6 Plug HSS TiN 14
    $40.78
  • A55946 ACT 1/2-13 0.367 3-3/8 H8 6 Plug HSS TiN 6
    $40.78
  • A55947 ACT 1/2-20 0.367 3-3/8 H5 6 Plug HSS TiN 19
    $40.78
  • A55948 ACT 1/2-20 0.367 3-3/8 H8 6 Plug HSS TiN 8
    $40.78
  • A77324 ACT 1/2-13 0.3670 3-3/8 H7 None Plug HSS Uncoated 18
    $32.39
  • A77325 ACT 1/2-13 0.3670 3-3/8 H7 None Bottom HSS Uncoated 40
    $32.39
  • A77326 ACT 1/2-13 0.3670 3-3/8 H10 None Plug HSS Uncoated 17
    $32.39
  • A77327 ACT 1/2-13 0.3670 3-3/8 H10 None Bottom HSS Uncoated 35
    $32.39
  • A77328 ACT 1/2-20 0.3670 3-3/8 H5 None Plug HSS Uncoated 66
    $32.39
  • A77329 ACT 1/2-20 0.3670 3-3/8 H5 None Bottom HSS Uncoated 41
    $32.39

* Lead times can vary from 1–10 business days. Call (908) 98-ATLAS or email sales@atlascuttingtools.com for details.

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