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
    A57916 ACT 1/4-20 0.255 2-1/2 H3 4 Taper, Plug, Bottoming HSS TIN Available to Order*
    $28.78
  • A57872 ACT 3/8-16 0.381 2-15/16 H3 4 Plug HSS TIN 30
    $14.43
  • A57617 ACT M18 X 2.5 0.542 4-1/32 D7 3 Spiral Point Plug HSS TIN Available to Order*
    $62.30
  • A55813 ACT 6-32 0.141 2 H3 2 High Spiral HSS Uncoated 55
    $17.73
  • A55190 ACT 5-40 0.141 1-15/16 H2 2 Spiral Point Plug HSS ALTiN 7
    $13.07
  • A54303 ACT 1/2-13 0.367 3-3/8 H3 4 Plug HSS NIT/ST 60
    $16.37
  • A54074 ACT 10-24 0.194 2-3/8 H3 4 Plug HSS STEAM OXIDE 100
    $6.14
  • A53922 ACT 4-40 0.141 1-7/8 H1 3 Bottoming HSS Uncoated 100
    $6.93
  • A77542 ACT M10 X 1.0 0.3810 2-15/16 D5 4 Plug HSS Uncoated 26
    $14.27
  • A77533 ACT M8 X 1.25 0.3180 2.7188" D10 None Bottom HSS Uncoated 100
    $17.79
  • A77305 ACT 5/16-24 0.3180 2.7188" H5 None Bottom HSS Uncoated 24
    $16.66
  • A77270 ACT 1/4-20 0.2550 2-1/2 H3 4 Plug HSS Uncoated 65
    $29.92
  • A77255 ACT 5/8-18 0.4800 3-13/16 H3 4 Bottom HSS TiN 10
    $80.51
  • A57944 ACT M16 X 2.0 0.48 3-13/16 D7 4 Taper HSS TIN 11
    $56.23
  • A57896 ACT 3/8-16 0.381 2-15/16 H3 4 Bottoming HSS TIN 50
    $14.43
  • A55814 ACT 6-40 0.14 2 H3 2 High Spiral HSS Uncoated 100
    $17.73
  • A54984 ACT M20 X 2.5 0.652 4-15/32 D7 4 Spiral Point Plug HSS Uncoated 51
    $70.80
  • A54592 ACT 5-44 0.141 1-15/16 H2 2 Spiral Point Plug HSS Uncoated 100
    $8.82
  • A54323 ACT 1/2-20 0.367 3-3/8 H3 4 Bottoming HSS NIT/ST 24
    $18.51
  • A54177 ACT 1/4-28 0.255 2-1/2 H3 4 Taper, Plug, Bottoming HSS Uncoated 100
    $17.36
  • A54077 ACT 10-24 0.194 2-3/8 H3 4 Bottoming HSS STEAM OXIDE 100
    $6.14
  • A53925 ACT 4-40 0.141 1-7/8 H2 2 Bottoming HSS Uncoated 76
    $6.93
  • A77543 ACT M10 X 1.0 0.3810 2-15/16 D5 4 Bottom HSS Uncoated 22
    $14.27
  • A77346 ACT 6-32 0.1410 2 H3 2 Semi Bottom HSS ZRN 22
    $21.60
  • A77306 ACT 5/16-24 0.3180 2.7188" H7 None Plug HSS Uncoated Available to Order*
    $16.66
  • A77272 ACT 1/4-20 0.2550 2-1/2 H3 4 Bottom HSS Uncoated 49
    $29.92
  • A77269 ACT 1/4-20 0.2550 2-1/2 H3 4 Taper HSS TiN 6
    $33.26
  • A58025 ACT M36 X 4.0 1.233 6-1/16 D9 4 Taper, Plug, Bottoming HSS TIN Available to Order*
    $1,244.73
  • A57970 ACT M16 X 1.5 0.48 3-13/16 D6 4 Plug HSS TIN 9
    $56.23
  • A57917 ACT 1/4-28 0.255 2-1/2 H3 4 Taper, Plug, Bottoming HSS TIN Available to Order*
    $28.78
  • A57849 ACT 3/8-24 0.381 2-15/16 H3 4 Taper HSS TIN 3
    $14.43
  • A57618 ACT M20 X 2.5 0.652 4-15/32 D7 4 Spiral Point Plug HSS TIN 24
    $91.16
  • A55892 ACT M10 X 1.5 0.381 2-15/16 D11 Plug HSS TiN 3
    $27.46
  • A54594 ACT 5-44 0.141 1-15/16 H2 2 Spiral Point Plug HSS STEAM OXIDE 83
    $9.60
  • A54320 ACT 1/2-20 0.367 3-3/8 H3 4 Plug HSS NIT/ST 20
    $18.51
  • A54103 ACT 10-32 0.194 2-3/8 H3 4 Taper HSS STEAM OXIDE 6
    $6.14
  • A53931 ACT 4-40 0.141 1-7/8 H2 3 Bottoming HSS Uncoated 100
    $6.48
  • A77347 ACT 6-40 0.1410 2 H3 2 Semi Bottom HSS ZRN 15
    $22.06
  • A77307 ACT 5/16-24 0.3180 2.7188" H7 None Bottom HSS Uncoated 11
    $16.66
  • A77274 ACT 1/4-28 0.2550 2-1/2 H3 4 Taper HSS Uncoated 100
    $29.92
  • A77271 ACT 1/4-20 0.2550 2-1/2 H3 4 Plug HSS TiN 3
    $33.26
  • A57971 ACT M16 X 2.0 0.48 3-13/16 D7 4 Plug HSS TIN 24
    $56.23
  • A57873 ACT 3/8-24 0.381 2-15/16 H3 4 Plug HSS TIN 26
    $14.43
  • A55893 ACT M10 X 1.5 0.381 2-15/16 D10 Bottoming HSS TiN 7
    $27.46
  • A54904 ACT M12 X 1.25 0.367 3-3/8 D5 4 Taper HSS Uncoated 38
    $18.47
  • A54593 ACT 5-44 0.141 1-15/16 H2 2 Spiral Point Plug HSS NIT/ST 20
    $7.05
  • A54335 ACT 9/16-12 0.429 3-19/32 H3 4 Bottoming HSS NIT/ST 33
    $27.54
  • A54186 ACT 5/16-18 0.318 2-23/32 H2 4 Taper, Plug, Bottoming HSS Uncoated 10
    $23.30
  • A54106 ACT 10-32 0.194 2-3/8 H3 4 Plug HSS STEAM OXIDE 16
    $6.14
  • A53936 ACT 4-48 0.141 1-7/8 H2 3 Taper HSS Uncoated 75
    $6.93
  • A77400 ACT M10 X 1.5 0.3810 2-15/16 D11 None Single Thread HSS TiN 15
    $25.61
  • A77385 ACT 5/16-18 0.3180 2.7188" H8 None Single Thread HSS TiN 16
    $21.18
  • A77276 ACT 1/4-28 0.2550 2-1/2 H3 4 Plug HSS Uncoated 87
    $29.92
  • A77273 ACT 1/4-20 0.2550 2-1/2 H3 4 Bottom HSS TiN 8
    $33.26
  • A57993 ACT M16 X 1.5 0.48 3-13/16 D6 4 Bottoming HSS TIN 5
    $56.23
  • A57897 ACT 3/8-24 0.381 2-15/16 H3 4 Bottoming HSS TIN 12
    $14.43
  • A55815 ACT 8-32 0.168 2-1/8 H3 3 High Spiral HSS Uncoated 19
    $17.73
  • A54905 ACT M12 X 1.25 0.367 3-3/8 D5 4 Plug HSS Uncoated 79
    $18.47
  • A54595 ACT 6-32 0.141 2 H1 2 Spiral Point Plug HSS Uncoated 47
    $7.75
  • A54332 ACT 9/16-12 0.429 3-19/32 H3 4 Plug HSS NIT/ST 15
    $27.54
  • A54199 ACT 5/16-18 0.318 2-23/32 H3 4 Taper, Plug, Bottoming HSS Uncoated 28
    $20.91
  • A54109 ACT 10-32 0.194 2-3/8 H3 4 Bottoming HSS STEAM OXIDE 16
    $6.14
  • A77446 ACT M10 x 1.5 0.3810 2-15/16 D11 None Single Thread HSS Uncoated 16
    $20.17
  • A77386 ACT 5/16-24 0.3180 2.7188" H5 None Single Thread HSS TiN 2
    $21.18
  • A77278 ACT 1/4-28 0.2550 2-1/2 H3 4 Bottom HSS Uncoated 100
    $29.92
  • A77275 ACT 1/4-28 0.2550 2-1/2 H3 4 Taper HSS TiN 8
    $33.26
  • A57994 ACT M16 X 2.0 0.48 3-13/16 D7 4 Bottoming HSS TIN 14
    $56.23
  • A57918 ACT 5/16-18 0.318 2-23/32 H3 4 Taper, Plug, Bottoming HSS TIN Available to Order*
    $35.87
  • A57850 ACT 7/16-14 0.323 3-5/32 H3 4 Taper HSS TIN 19
    $22.64
  • A55816 ACT 8-36 0.168 2-1/8 H3 3 High Spiral HSS Uncoated 19
    $17.73
  • A54906 ACT M12 X 1.25 0.367 3-3/8 D5 4 Bottoming HSS Uncoated 34
    $18.47
  • A54596 ACT 6-32 0.141 2 H2 2 Spiral Point Plug HSS Uncoated 7
    $6.60
  • A54347 ACT 9/16-18 0.429 3-19/32 H3 4 Bottoming HSS NIT/ST 25
    $27.54
  • A54116 ACT 12-24 0.22 2-3/8 H3 4 Taper HSS STEAM OXIDE 77
    $6.44
  • A53938 ACT 4-48 0.141 1-7/8 H2 3 Plug HSS Uncoated 62
    $6.93
  • A77534 ACT M10 X 1.5 0.3810 2-15/16 D11 None Plug HSS Uncoated 23
    $20.17
  • A77387 ACT 5/16-24 0.3180 2.7188" H7 None Single Thread HSS TiN 9
    $21.18
  • A77348 ACT 8-32 0.1680 2-1/8 H3 3 Semi Bottom HSS ZRN 7
    $21.60
  • A77280 ACT 5/16-18 0.3180 2.7188" H3 4 Taper HSS Uncoated 100
    $36.87
  • A77277 ACT 1/4-28 0.2550 2-1/2 H3 4 Plug HSS TiN 11
    $33.26
  • A57945 ACT M18 X 1.5 0.542 4-1/32 D6 4 Taper HSS TIN 10
    $75.57
  • A57874 ACT 7/16-14 0.323 3-5/32 H3 4 Plug HSS TIN 22
    $22.64
  • A54907 ACT M12 X 1.75 0.367 3-3/8 D6 4 Taper HSS Uncoated 100
    $18.47
  • A54597 ACT 6-32 0.141 2 H3 2 Spiral Point Plug HSS Uncoated 100
    $6.60
  • A54344 ACT 9/16-18 0.429 3-19/32 H3 4 Plug HSS NIT/ST 46
    $27.54
  • A54219 ACT 5/16-24 0.318 2-23/32 H3 4 Taper, Plug, Bottoming HSS Uncoated 9
    $20.91
  • A54119 ACT 12-24 0.22 2-3/8 H3 4 Plug HSS STEAM OXIDE 100
    $6.44
  • A53941 ACT 4-48 0.141 1-7/8 H2 3 Bottoming HSS Uncoated 56
    $6.93
  • A77535 ACT M10 X 1.5 0.3810 2-15/16 D11 None Bottom HSS Uncoated 15
    $20.17
  • A77431 ACT 5/16-18 0.3180 2.7188" H8 None Single Thread HSS Uncoated 21
    $16.66
  • A77349 ACT 8-36 0.1680 2-1/8 H3 3 Semi Bottom HSS ZRN 10
    $21.60
  • A77281 ACT 5/16-18 0.3180 2.7188" H3 4 Plug HSS Uncoated 100
    $36.87
  • A77279 ACT 1/4-28 0.2550 2-1/2 H3 4 Bottom HSS TiN 9
    $33.26
  • A57946 ACT M18 X 2.5 0.542 4-1/32 D7 4 Taper HSS TIN 8
    $75.57
  • A57919 ACT 5/16-24 0.318 2-23/32 H3 4 Taper, Plug, Bottoming HSS TIN Available to Order*
    $35.87
  • A57898 ACT 7/16-14 0.323 3-5/32 H3 4 Bottoming HSS TIN 5
    $22.64
  • A54908 ACT M12 X 1.75 0.367 3-3/8 D6 4 Plug HSS Uncoated 100
    $18.47
  • A54600 ACT 6-32 0.141 2 H7 2 Spiral Point Plug HSS Uncoated 40
    $7.21
  • A54360 ACT 5/8-11 0.48 3-13/16 H3 4 Bottoming HSS NIT/ST 46
    $33.06
  • A54122 ACT 12-24 0.22 2-3/8 H3 4 Bottoming HSS STEAM OXIDE 29
    $6.44

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

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