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
    A58395 ACT 1/2-14 0.6875 3-1/8 5 NPTF Dryseal - Interrupted HSS TIN 5
    $99.46
  • A58384 ACT 3/8-18 0.7 2-9/16 4 NPTF Dryseal HSS TIN 4
    $53.89
  • A55054 ACT 3/8-24 0.275 6 H3 NF .206 7/16 1-1/4 3 Spiral Point Plug HSS Uncoated 10
    $79.91
  • A55008 ACT 3/8-18 0.7 2-9/16 5 NPT - Interrupted HSS Uncoated 22
    $52.20
  • A54988 ACT 1/4-18 0.5625 2-7/16 4 NPT HSS Uncoated 8
    $26.64
  • A54855 ACT 1/4-28 0.255 2-1/2 H4 2 Bottoming HSS TiN 21
    $19.75
  • A54806 ACT 1/2-13 0.507 6 H3 4 Pulley HSS Uncoated 81
    $70.42
  • A77591 ACT 1-11-1/2 1.1250 (1-1/8)" 3-3/4 nan 5 nan HSS Uncoated 9
    $201.91
  • A77410 ACT 3/8-16 0.2750 6 H3 3 SP/PT Plug HSS ALTiN 22
    $93.41
  • A57647 ACT 3/8-18 0.7 2-9/16 5 NPT - Interrupted HSS STEAM OXIDE 23
    $56.37
  • A57626 ACT 1/4-18 0.5625 2-7/16 4 NPT HSS TIN 45
    $35.30
  • A55068 ACT 1-11-1/2 1.125 3-3/4 5 NPS HSS Uncoated 23
    $189.30
  • A55040 ACT 3/4-14 0.9063 3-1/4 5 NPTF Dryseal - Interrupted HSS Uncoated 22
    $96.69
  • A55029 ACT 1/2-14 0.6875 3-1/8 4 NPTF Dryseal HSS Uncoated 23
    $61.57
  • A54856 ACT 1/4-28 0.255 2-1/2 H6 2 Bottoming HSS TiN 20
    $19.75
  • A54807 ACT 1/2-13 0.507 8 H3 4 Pulley HSS Uncoated 9
    $92.57
  • A77606 ACT 1-11-1/2 1.1250 (1-1/8)" 3-3/4 nan 5 nan HSS TiN 6
    $214.48
  • A77411 ACT 3/8-24 0.2750 6 H3 3 SP/PT Plug HSS ALTiN 4
    $86.75
  • A58406 ACT 1-11-1/2 1.125 3-3/4 5 NPS HSS TIN 3
    $146.91
  • A58396 ACT 3/4-14 0.9063 3-1/4 5 NPTF Dryseal - Interrupted HSS TIN 7
    $144.81
  • A58385 ACT 1/2-14 0.6875 3-1/8 4 NPTF Dryseal HSS TIN 5
    $75.21
  • A57648 ACT 3/8-18 0.7 2-9/16 5 NPT - Interrupted HSS TIN 12
    $64.86
  • A57625 ACT 1/4-18 0.5625 2-7/16 4 NPT HSS STEAM OXIDE 7
    $30.15
  • A55928 ACT 1/4-20 0.255 2-1/2 H3 2 Plug HSS TiN 24
    $19.75
  • A54808 ACT 1/2-13 0.507 10 H3 4 Pulley HSS Uncoated 13
    $82.30
  • A55929 ACT 1/4-20 0.255 2-1/2 H4 2 Plug HSS TiN 9
    $19.75
  • A55055 ACT 7/16-14 0.323 6 H3 NC .242 13/32 1-7/16 3 Spiral Point Plug HSS Uncoated 20
    $91.08
  • A55030 ACT 3/4-14 0.9063 3-1/4 5 NPTF Dryseal HSS Uncoated 16
    $86.05
  • A55009 ACT 1/2-14 0.6875 3-1/8 5 NPT - Interrupted HSS Uncoated 58
    $83.05
  • A54989 ACT 3/8-18 0.7 2-9/16 4 NPT HSS Uncoated 100
    $35.26
  • A54809 ACT 1/2-13 0.507 12 H3 4 Pulley HSS Uncoated 10
    $101.27
  • A58386 ACT 3/4-14 0.9063 3-1/4 5 NPTF Dryseal HSS TIN 11
    $105.76
  • A57649 ACT 1/2-14 0.6875 3-1/8 5 NPT - Interrupted HSS STEAM OXIDE 75
    $88.23
  • A57628 ACT 3/8-18 0.7 2-9/16 4 NPT HSS TIN 15
    $46.43
  • A55931 ACT 1/4-28 0.255 2-1/2 H4 2 Plug HSS TiN 13
    $19.75
  • A55056 ACT 7/16-20 0.323 6 H3 NF .242 13/32 1-7/16 3 Spiral Point Plug HSS Uncoated 20
    $91.08
  • A54810 ACT 5/8-11 0.633 6 H3 4 Pulley HSS Uncoated 6
    $93.96
  • A77412 ACT 7/16-14 0.3230 6 H3 3 SP/PT Plug HSS ALTiN 10
    $94.58
  • A57650 ACT 1/2-14 0.6875 3-1/8 5 NPT - Interrupted HSS TIN 21
    $100.89
  • A57627 ACT 3/8-18 0.7 2-9/16 4 NPT HSS STEAM OXIDE 4
    $39.58
  • A55932 ACT 1/4-28 0.255 2-1/2 H6 2 Plug HSS TiN 18
    $19.75
  • A55031 ACT 1-11-1/2 1.125 3-3/4 5 NPTF Dryseal HSS Uncoated 18
    $94.34
  • A54811 ACT 5/8-11 0.633 8 H3 4 Pulley HSS Uncoated 10
    $121.84
  • A77413 ACT 7/16-20 0.3230 6 H3 3 SP/PT Plug HSS ALTiN 7
    $94.58
  • A77296 ACT 1/4-28 0.2550 2-1/2 H4 None Plug HSS Uncoated 26
    $14.94
  • A55010 ACT 3/4-14 0.9063 3-1/4 5 NPT - Interrupted HSS Uncoated 47
    $121.39
  • A54990 ACT 1/2-14 0.6875 3-1/8 4 NPT HSS Uncoated 100
    $55.66
  • A54812 ACT 5/8-11 0.633 10 H3 4 Pulley HSS Uncoated 4
    $110.71
  • A77297 ACT 1/4-28 0.2550 2-1/2 H4 None Bottom HSS Uncoated 51
    $14.94
  • A57651 ACT 3/4-14 0.9063 3-1/4 5 NPT - Interrupted HSS STEAM OXIDE 15
    $129.01
  • A57630 ACT 1/2-14 0.6875 3-1/8 4 NPT HSS TIN 14
    $69.32
  • A55057 ACT 1/2-13 0.367 6 H3 NC .275 7/16 1-21/32 3 Spiral Point Plug HSS Uncoated 16
    $96.20
  • A55032 ACT 1-1/4-11-1/2 1.3125 4 5 NPTF Dryseal HSS Uncoated 21
    $185.79
  • A54813 ACT 5/8-11 0.633 12 H3 4 Pulley HSS Uncoated 15
    $129.68
  • A77298 ACT 1/4-28 0.2550 2-1/2 H6 None Plug HSS Uncoated 20
    $14.94
  • A58399 ACT 1-1/2-11-1/2 1.5 4-1/4 7 NPTF Dryseal - Interrupted HSS TIN 5
    $290.96
  • A58388 ACT 1-1/4-11-1/2 1.3125 4 5 NPTF Dryseal HSS TIN Available to Order*
    $146.58
  • A57652 ACT 3/4-14 0.9063 3-1/4 5 NPT - Interrupted HSS TIN 11
    $146.83
  • A57629 ACT 1/2-14 0.6875 3-1/8 4 NPT HSS STEAM OXIDE 19
    $60.86
  • A55058 ACT 1/2-20 0.367 6 H3 NF .275 7/16 1-21/32 3 Spiral Point Plug HSS Uncoated 26
    $96.20
  • A54814 ACT 3/4-10 0.759 10 H3 4 Pulley HSS Uncoated 21
    $179.07
  • A77414 ACT 1/2-13 0.3670 6 H3 3 SP/PT Plug HSS ALTiN 16
    $104.37
  • A77299 ACT 1/4-28 0.2550 2-1/2 H6 None Bottom HSS Uncoated 15
    $14.94
  • A55044 ACT 2-11-1/2 1.875 4-1/2 7 NPTF Dryseal - Interrupted HSS Uncoated 5
    $375.57
  • A55033 ACT 1-1/2-11-1/2 1.5 4-1/4 7 NPTF Dryseal HSS Uncoated 2
    $180.51
  • A55011 ACT 1-11-1/2 1.125 3-3/4 5 NPT - Interrupted HSS Uncoated 35
    $183.65
  • A54991 ACT 3/4-14 0.9063 3-1/4 5 NPT HSS Uncoated 58
    $78.06
  • A54815 ACT 3/4-10 0.759 12 H3 4 Pulley HSS Uncoated 9
    $154.45
  • A77415 ACT 1/2-20 0.3670 6 H3 3 SP/PT Plug HSS ALTiN 2
    $99.23
  • A77382 ACT 1/4-20 0.2550 2-1/2 H8 None Single Thread HSS TiN 51
    $19.09
  • A58389 ACT 1-1/2-11-1/2 1.5 4-1/4 7 NPTF Dryseal HSS TIN 1
    $193.50
  • A57653 ACT 1-11-1/2 1.125 3-3/4 5 NPT - Interrupted HSS STEAM OXIDE 16
    $197.41
  • A57632 ACT 3/4-14 0.9063 3-1/4 5 NPT HSS TIN 17
    $97.56
  • A77383 ACT 1/4-28 0.2550 2-1/2 H4 None Single Thread HSS TiN 5
    $19.09
  • A57654 ACT 1-11-1/2 1.125 3-3/4 5 NPT - Interrupted HSS TIN 7
    $223.15
  • A57631 ACT 3/4-14 0.9063 3-1/4 5 NPT HSS STEAM OXIDE 45
    $85.64
  • A55059 ACT 5/8-11 0.48 6 H3 NC .360 9/16 1-13/16 3 Spiral Point Plug HSS Uncoated Available to Order*
    $124.32
  • A55034 ACT 2-11-1/2 1.875 4-1/2 7 NPTF Dryseal HSS Uncoated 23
    $245.53
  • A77384 ACT 1/4-28 0.2550 2-1/2 H6 None Single Thread HSS TiN 9
    $19.09
  • A58390 ACT 2-11-1/2 1.875 4-1/2 7 NPTF Dryseal HSS TIN 11
    $258.43
  • A55060 ACT 5/8-18 0.48 6 H3 NF .360 9/16 1-13/16 3 Spiral Point Plug HSS Uncoated 26
    $124.32
  • A55012 ACT 1-1/4-11-1/2 1.3125 4 5 NPT - Interrupted HSS Uncoated 18
    $261.20
  • A54992 ACT 1-11-1/2 1.125 3-3/4 5 NPT HSS Uncoated 74
    $119.11
  • A77427 ACT 1/4-20 0.2550 2-1/2 H5 None Single Thread HSS Uncoated 29
    $14.94
  • A77416 ACT 5/8-11 0.4800 6 H3 3 SP/PT Plug HSS ALTiN 9
    $145.26
  • A57655 ACT 1-1/4-11-1/2 1.3125 4 5 NPT - Interrupted HSS STEAM OXIDE 36
    $273.86
  • A57634 ACT 1-11-1/2 1.125 3-3/4 5 NPT HSS TIN 6
    $142.12
  • A77428 ACT 1/4-20 0.2550 2-1/2 H8 None Single Thread HSS Uncoated 19
    $14.94
  • A77417 ACT 5/8-18 0.4800 6 H3 3 SP/PT Plug HSS ALTiN 7
    $135.47
  • A57656 ACT 1-1/4-11-1/2 1.3125 4 5 NPT - Interrupted HSS TIN 9
    $277.24
  • A57633 ACT 1-11-1/2 1.125 3-3/4 5 NPT HSS STEAM OXIDE 18
    $128.89
  • A77429 ACT 1/4-28 0.2550 2-1/2 H4 None Single Thread HSS Uncoated 19
    $14.94
  • A55061 ACT 3/4-10 0.59 6 H3 NC .442 11/16 2 3 Spiral Point Plug HSS Uncoated 1
    $161.34
  • A55013 ACT 1-1/2-11-1/2 1.5 4-1/4 7 NPT - Interrupted HSS Uncoated 17
    $348.73
  • A54993 ACT 1-1/4-11-1/2 1.3125 4 5 NPT HSS Uncoated 40
    $168.88
  • A77430 ACT 1/4-28 0.2550 2-1/2 H6 None Single Thread HSS Uncoated 20
    $14.94
  • A57657 ACT 1-1/2-11-1/2 1.5 4-1/4 7 NPT - Interrupted HSS STEAM OXIDE 55
    $374.91
  • A57636 ACT 1-1/4-11-1/2 1.3125 4 5 NPT HSS TIN 13
    $205.17
  • A55062 ACT 3/4-16 0.59 6 H3 NF .442 11/16 2 3 Spiral Point Plug HSS Uncoated 16
    $161.34
  • A77461 ACT 1/4-20 0.2550 2-1/2 H5 None Single Thread HSS TiN 25
    $19.09

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

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