HSS

HSS

Screw & Fractional Size
Screw & Fractional Size
Metric
Metric
Pipe Pulley Thread Forming
Pipe Pulley Thread Forming
Straight Spiral Flute
Straight Spiral Flute

Our standard HSS tap selection covers Screw & Fractional sizing, Metric threads, Pipe & Pulley Thread Forming taps, and Straight Spiral Flute styles for improved chip control. HSS taps remain the standard choice for general-purpose threading work across a wide range of materials and shop setups, from manual tapping to lower-speed machine tapping.

As with the rest of our tap line, every HSS tap is manufactured in the USA using domestic materials, with same-day shipping on in-stock sizes and a 97% fill rate.

  • 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
    A77407 ACT 1/4-28 0.1850 6 H3 2 SP/PT Plug HSS ALTiN Available to Order*
    $74.57
  • A77370 ACT M3.5 X 0.6 0.1410 2 D4 3 Semi Bottom HSS ZRN Available to Order*
    $21.13
  • A77355 ACT 1/4-28 0.2550 2-1/2 H3 3 Semi Bottom HSS ZRN Available to Order*
    $26.37
  • A77336 ACT 0-80 0.1410 1-5/8 H2 None Bottom HSS Uncoated Available to Order*
    $19.93
  • A77204 ACT 1-14 0.8000 5.1250" H4 4 Bottom HSS TiN Available to Order*
    $172.58
  • A77200 ACT 1-14 0.8000 5.1250" H4 4 Taper HSS Uncoated Available to Order*
    $162.00
  • A58408 ACT 1/4-18 6 4 NPT HSS TIN 4
    $116.27
  • A58402 ACT 1/4-18 0.5625 2-7/16 4 NPS HSS TIN 6
    $59.58
  • A58392 ACT 1/8-27 0.4375 2-1/8 5 NPTF Dryseal - Interrupted HSS TIN 4
    $49.20
  • A58381 ACT 1/8-27 0.3125 2-1/8 4 NPTF Dryseal HSS TIN 8
    $36.99
  • A58004 ACT M3 X 0.5 0.141 1-15/16 D3 3 Taper, Plug, Bottoming HSS TIN Available to Order*
    $43.92
  • A57980 ACT M2 X 0.4 0.141 1-3/4 D3 3 Bottoming HSS TIN 9
    $27.68
  • A57835 ACT 2-56 0.141 1-3/4 H2 3 Taper HSS TIN 16
    $16.55
  • A57604 ACT M2.5 X 0.45 0.141 1-13/16 D3 2 Spiral Point Plug HSS TIN 100
    $15.76
  • A55899 ACT 10-32 0.194 2-3/8 H11 4 Plug HSS Uncoated 23
    $8.66
  • A55849 ACT 5-40 1.141 1-7/9 H1 3 Hand Bottoming HSS Uncoated 64
    $16.41
  • A55253 ACT 0-80 .141 1-5/8 H2 2 Spiral Point Plug HSS TIN 16
    $20.95
  • A55006 ACT 1/8-27 0.4375 2-1/8 5 NPT - Interrupted HSS Uncoated 66
    $37.32
  • A54986 ACT 1/8-27 0.3125 2-1/8 4 NPT HSS Uncoated 100
    $23.97
  • A54876 ACT M2 X 0.4 0.141 1-3/4 D3 3 Bottoming HSS Uncoated 16
    $16.45
  • A54800 ACT 5/16-18 0.318 8 H3 4 Pulley HSS Uncoated 21
    $70.42
  • A54782 ACT 6-40 0.141 2 H2 2 STI - Spiral Point Plug HSS Uncoated 42
    $18.31
  • A54740 ACT 7/16-14 0.323 3-5/32 H11 4 Spiral Point Plug HSS Uncoated 38
    $23.01
  • A54734 ACT 1/4-28 0.255 2-12 H3 2 Spiral Point Bottoming HSS Uncoated 12
    $11.54
  • A53929 ACT 4-40 0.141 1-7/8 H2 3 Plug HSS NIT/ST 100
    $7.22
  • A53882 ACT 1-72 0.141 1-11/16 H1 2 Taper, Plug, Bottoming HSS Uncoated 8
    $34.69
  • A53866 ACT 0-80 0.141 1-5/8 H1 2 Bottoming HSS Uncoated 37
    $12.29
  • A79029 ACT 5/16-24 0.3180 2.7188 H3 4 Taper, Plug, Bottoming HSS Uncoated Available to Order*
    $33.02
  • A77622 ACT 1/4-20 0.2550 2-1/2 H3 2 SP/PT Bottom HSS TiN Available to Order*
    $15.36
  • A77596 ACT 3/4-14 0.9063 3-1/4 nan 5 nan HSS NITRIDE & STEAM OXIDE Available to Order*
    $86.47
  • A77588 ACT 3/8-18 0.7000 2-9/16 nan 4 nan HSS Uncoated Available to Order*
    $60.26
  • A77557 ACT 1-1/4-8 1.0210 5.7500" H5 4 Plug HSS Uncoated Available to Order*
    $182.38
  • A77379 ACT M2 X 0.4 0.1410 1-3/4 D5 None Bottom HSS Uncoated Available to Order*
    $16.44
  • A77337 ACT 0-80 0.1410 1-5/8 H3 None Bottom HSS Uncoated Available to Order*
    $19.93
  • A77334 ACT 6-32 0.1410 2 H2 3 Bottom HSS TiN Available to Order*
    $21.55
  • A77201 ACT 1-14 0.8000 5.1250" H4 4 Plug HSS Uncoated Available to Order*
    $162.00
  • A57955 ACT M2.5 X 0.45 0.141 1-13/16 D3 3 Plug HSS TIN 7
    $17.04
  • A57859 ACT 2-56 0.141 1-3/4 H2 3 Plug HSS TIN 23
    $16.55
  • A57643 ACT 1/8-27 0.4375 2-1/8 5 NPT - Interrupted HSS STEAM OXIDE 18
    $40.05
  • A57622 ACT 1/8-27 0.3125 2-1/8 4 NPT HSS TIN 37
    $29.65
  • A55850 ACT 6-32 0.141 2 H2 3 Hand Plug HSS Uncoated 19
    $16.62
  • A55839 ACT M4 X 0.7 0.168 2-1/8 D4 3 High Spiral HSS Uncoated 37
    $17.49
  • A55823 ACT 5/16-18 0.318 2-23/32 H3 3 High Spiral HSS Uncoated 4
    $23.05
  • A55187 ACT 0-80 0.141 1-5/8 H2 2 Spiral Point Plug HSS ALTiN 16
    $20.95
  • A55071 ACT 3/8-18 6 4 NPT HSS Uncoated 17
    $112.85
  • A55065 ACT 3/8-18 0.7 2-9/16 4 NPS HSS Uncoated 12
    $55.87
  • A55051 ACT 5/16-18 0.24 6 H3 NC .180 3/8 1-1/8 2 Spiral Point Plug HSS Uncoated 15
    $74.17
  • A55037 ACT 1/4-18 0.5625 2-7/16 5 NPTF Dryseal - Interrupted HSS Uncoated 58
    $45.49
  • A55026 ACT 1/8-27 0.4375 2-1/8 4 NPTF Dryseal HSS Uncoated 10
    $26.48
  • A54971 ACT M3 X 0.5 0.141 1-15/16 D3 2 Spiral Point Plug HSS Uncoated 6
    $9.62
  • A54948 ACT M4 X 0.7 0.168 2-1/8 D4 4 Taper, Plug, Bottoming HSS Uncoated 32
    $23.14
  • A54877 ACT M2.5 X 0.45 0.141 1-13/16 D3 3 Plug HSS Uncoated 100
    $10.19
  • A54801 ACT 3/8-16 0.381 6 H3 4 Pulley HSS Uncoated 41
    $65.65
  • A54783 ACT 8-32 0.168 2-1/8 H2 2 STI - Spiral Point Plug HSS Uncoated 50
    $18.43
  • A54741 ACT 1/2-13 0.367 3-3/8 H11 4 Spiral Point Plug HSS Uncoated 21
    $27.96
  • A54550 ACT 1/4-20 0.255 2-1/2 H11 4 Plug HSS Uncoated 16
    $10.40
  • A53888 ACT 2-56 0.141 1-3/4 H1 3 Taper, Plug, Bottoming HSS Uncoated 8
    $34.69
  • A53870 ACT 0-80 0.141 1-5/8 H2 2 Bottoming HSS Uncoated 28
    $12.29
  • A79050 ACT 5/16-18 0.3180 2.7188 H3 4 Taper, Plug, Bottoming HSS TiN Available to Order*
    $54.46
  • A77623 ACT 1/4-28 0.2550 2-1/2 H3 2 SP/PT Bottom HSS TiN Available to Order*
    $15.36
  • A77603 ACT 3/8-18 0.7000 2-9/16 nan 4 nan HSS TiN Available to Order*
    $67.54
  • A77597 ACT 1-11-1/2 1.1250 (1-1/8)" 3-3/4 nan 5 nan HSS NITRIDE & STEAM OXIDE Available to Order*
    $127.65
  • A77558 ACT 1-1/4-8 1.0210 5.7500" H5 4 Bottom HSS Uncoated Available to Order*
    $182.38
  • A77448 ACT 0-80 0.1410 1-5/8 H2 None Single Thread HSS TiN Available to Order*
    $23.56
  • A77392 ACT M2 X 0.4 0.1410 1-3/4 D5 None Single Thread HSS TiN Available to Order*
    $20.01
  • A77371 ACT M4 X 0.7 0.1680 2-1/8 D4 3 Semi Bottom HSS ZRN Available to Order*
    $22.14
  • A77256 ACT 8-32 0.1680 2-1/8 H3 4 Taper HSS TiN Available to Order*
    $24.61
  • A77203 ACT 1-14 0.8000 5.1250" H4 4 Bottom HSS Uncoated Available to Order*
    $162.00
  • A58409 ACT 3/8-18 6 4 NPT HSS TIN 9
    $157.38
  • A58403 ACT 3/8-18 0.7 2-9/16 4 NPS HSS TIN 12
    $64.45
  • A58393 ACT 1/4-18 0.5625 2-7/16 5 NPTF Dryseal - Interrupted HSS TIN 18
    $56.03
  • A58382 ACT 1/8-27 0.4375 2-1/8 4 NPTF Dryseal HSS TIN 10
    $36.99
  • A58005 ACT M4 X 0.7 0.168 2-1/8 D4 4 Taper, Plug, Bottoming HSS TIN Available to Order*
    $36.03
  • A57931 ACT M3 X 0.5 0.141 1-15/16 D3 3 Taper HSS TIN 36
    $14.19
  • A57883 ACT 2-56 0.141 1-3/4 H2 3 Bottoming HSS TIN 3
    $16.55
  • A57644 ACT 1/8-27 0.4375 2-1/8 5 NPT - Interrupted HSS TIN 51
    $45.31
  • A57621 ACT 1/8-27 0.3125 2-1/8 4 NPT HSS STEAM OXIDE 30
    $25.97
  • A57605 ACT M3 X 0.5 0.141 1-15/16 D3 2 Spiral Point Plug HSS TIN 31
    $13.33
  • A55851 ACT 6-32 2.141 1-7/10 H2 3 Hand Bottoming HSS Uncoated 23
    $16.62
  • A55824 ACT 5/16-24 0.318 2-23/32 H3 3 High Spiral HSS Uncoated 46
    $23.05
  • A55052 ACT 5/16-24 0.24 6 H3 NF .180 3/8 1-1/8 2 Spiral Point Plug HSS Uncoated 21
    $74.17
  • A54878 ACT M3 X 0.5 0.141 1-15/16 D3 3 Taper HSS Uncoated 100
    $8.46
  • A54802 ACT 3/8-16 0.381 8 H3 4 Pulley HSS Uncoated 16
    $78.51
  • A54784 ACT 10-24 0.194 2-3/8 H2 2 STI - Spiral Point Plug HSS Uncoated 44
    $18.85
  • A54742 ACT 5/8-11 0.48 3-13/16 H11 4 Spiral Point Plug HSS Uncoated 19
    $47.83
  • A54559 ACT 1-64 0.141 1-11/16 H1 2 Spiral Point Plug HSS Uncoated 88
    $13.70
  • A54551 ACT 5/16-18 0.318 2-23/32 H11 4 Plug HSS Uncoated 23
    $13.07
  • A53897 ACT 2-56 0.141 1-3/4 H2 3 Taper, Plug, Bottoming HSS Uncoated 7
    $29.53
  • A79051 ACT 5/16-24 0.3180 2.7188 H3 4 Taper, Plug, Bottoming HSS TiN Available to Order*
    $54.46
  • A77598 ACT 1-1/4-11-1/2 1.3125 (1-5/16)" 4 nan 5 nan HSS NITRIDE & STEAM OXIDE Available to Order*
    $180.37
  • A77589 ACT 1/2-14 0.6875 (11/16)" 3-1/8 nan 4 nan HSS Uncoated Available to Order*
    $75.41
  • A77559 ACT 1-3/8-8 1.1080 6.0625" H5 4 Plug HSS Uncoated Available to Order*
    $233.40
  • A77449 ACT 0-80 0.1410 1-5/8 H3 None Single Thread HSS TiN Available to Order*
    $23.56
  • A77438 ACT M2 x 0.4 0.1410 1-3/4 D5 None Single Thread HSS Uncoated Available to Order*
    $16.44
  • A77408 ACT 5/16-18 0.2400 6 H3 2 SP/PT Plug HSS ALTiN Available to Order*
    $79.56
  • A77356 ACT 5/16-18 0.3180 2.7188" H3 3 Semi Bottom HSS ZRN Available to Order*
    $28.80
  • A77332 ACT 6-32 0.1410 2 H2 3 Plug HSS Uncoated Available to Order*
    $19.51
  • A77258 ACT 8-32 0.1680 2-1/8 H3 4 Plug HSS TiN Available to Order*
    $24.61
  • A57956 ACT M3 X 0.5 0.141 1-15/16 D3 3 Plug HSS TIN 12
    $14.19
  • A57907 ACT 2-56 0.141 1-3/4 H2 3 Taper, Plug, Bottoming HSS TIN Available to Order*
    $51.62

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

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