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
    A55189 ACT 4-40 0.141 1-7/8 H2 2 Spiral Point Plug HSS ALTiN 12
    $13.07
  • A55048 ACT 10-32 0.136 6 H3 NF .102 1/4 7/8 2 Spiral Point Plug HSS Uncoated Available to Order*
    $53.64
  • A54897 ACT M8 X 1.25 0.318 2-23/32 D5 4 Bottoming HSS Uncoated 61
    $7.67
  • A54859 ACT 5/16-24 0.318 2-23/32 H5 2 Bottoming HSS TiN 15
    $22.68
  • A54097 ACT 10-32 0.194 2-3/8 H2 4 Taper, Plug, Bottoming HSS Uncoated 11
    $17.36
  • A54004 ACT 6-40 0.141 2 H2 3 Taper HSS STEAM OXIDE 100
    $5.99
  • A53917 ACT 3-56 0.141 1-13/16 H2 3 Bottoming HSS Uncoated 31
    $8.82
  • A79045 ACT 8-32 0.1680 2-1/8 H3 4 Taper, Plug, Bottoming HSS TiN 2
    $41.80
  • A77619 ACT 10-32 0.1940 2-3/8 H2 2 SP/PT Bottom HSS TiN 21
    $15.36
  • A77476 ACT M8 x 1.0 0.3180 2.7188" D5 4 Taper HSS Uncoated 36
    $12.14
  • A77462 ACT M12 x 1.25 0.3670 3-3/8 D5 3 SP/PT Plug HSS Uncoated 40
    $19.51
  • A77421 ACT 3-56 0.1410 1-13/16 H2 2 Semi Bottom HSS ZRN 7
    $30.17
  • A77404 ACT 10-24 0.1360 6 H3 2 SP/PT Plug HSS ALTiN 17
    $56.71
  • A77236 ACT 1/2-13 0.3670 3-3/8 H3 4 Bottom HSS Uncoated 85
    $49.72
  • A77235 ACT 1/2-13 0.3670 3-3/8 H3 4 Plug HSS TiN 8
    $53.69
  • A57967 ACT M12 X 1.75 0.367 3-3/8 D6 4 Plug HSS TIN 23
    $30.80
  • A57869 ACT 1/4-28 0.255 2-1/2 H3 4 Plug HSS TIN 19
    $10.39
  • A55889 ACT M6 X 1.0 0.255 2-1/2 D8 Bottoming HSS TiN 20
    $21.36
  • A55880 ACT 1/2-20 0.367 3-3/8 H3 4 Hand Plug HSS Uncoated 46
    $33.28
  • A54963 ACT M20 X 2.5 0.652 4-15/32 D7 4 Taper, Plug, Bottoming HSS Uncoated 10
    $175.11
  • A54860 ACT 5/16-24 0.318 2-23/32 H7 2 Bottoming HSS TiN 10
    $22.68
  • A54581 ACT 4-48 0.141 1-7/8 H1 2 Spiral Point Plug HSS Uncoated 14
    $8.99
  • A54237 ACT 3/8-16 0.381 2-15/16 H3 4 Bottoming HSS NIT/ST 69
    $9.19
  • A54110 ACT 10-32 0.194 2-3/8 H3 4 Taper, Plug, Bottoming HSS Uncoated 28
    $17.36
  • A54007 ACT 6-40 0.141 2 H2 3 Plug HSS STEAM OXIDE 15
    $5.99
  • A79025 ACT 10-24 0.1940 2-3/8 H3 4 Taper, Plug, Bottoming HSS Uncoated 13
    $29.35
  • A77620 ACT 10-32 0.1940 2-3/8 H3 2 SP/PT Bottom HSS TiN 17
    $15.36
  • A77477 ACT M8 x 1.0 0.3180 2.7188" D5 4 Plug HSS Uncoated 25
    $12.14
  • A77463 ACT M12 x 1.25 0.3670 3-3/8 D5 3 SP/PT Plug HSS TiN 18
    $23.52
  • A77405 ACT 10-32 0.1360 6 H3 2 SP/PT Plug HSS ALTiN 2
    $56.71
  • A77398 ACT M6 X 1.0 0.2550 2-1/2 D9 None Single Thread HSS TiN 23
    $19.93
  • A77238 ACT 1/2-20 0.3670 3-3/8 H3 4 Taper HSS Uncoated 77
    $56.24
  • A77237 ACT 1/2-13 0.3670 3-3/8 H3 4 Bottom HSS TiN 24
    $53.69
  • A57989 ACT M12 X 1.25 0.367 3-3/8 D5 4 Bottoming HSS TIN 24
    $30.80
  • A57913 ACT 10-32 0.194 2-3/8 H3 4 Taper, Plug, Bottoming HSS TIN Available to Order*
    $26.60
  • A57893 ACT 1/4-28 0.255 2-1/2 H3 4 Bottoming HSS TIN 20
    $10.39
  • A55933 ACT 5/16-18 0.318 2-23/32 H5 2 Plug HSS TiN 18
    $22.68
  • A55881 ACT 1/2-20 17.141 1-7/25 H3 4 Hand Bottoming HSS Uncoated 16
    $33.28
  • A55809 ACT 4-40 0.141 1-7/8 H2 2 High Spiral HSS Uncoated 31
    $21.85
  • A54582 ACT 4-48 0.141 1-7/8 H2 2 Spiral Point Plug HSS Uncoated 33
    $8.82
  • A54234 ACT 3/8-16 0.381 2-15/16 H3 4 Plug HSS NIT/ST 100
    $9.19
  • A54010 ACT 6-40 0.141 2 H2 3 Bottoming HSS STEAM OXIDE 16
    $5.99
  • A53947 ACT 4-36 0.141 1-7/8 H2 3 Plug HSS Uncoated 13
    $6.93
  • A79026 ACT 10-32 0.1940 2-3/8 H3 4 Taper, Plug, Bottoming HSS Uncoated 6
    $29.35
  • A77478 ACT M8 x 1.0 0.3180 2.7188" D5 4 Bottom HSS Uncoated 28
    $12.14
  • A77464 ACT M12 x 1.50 0.3670 3-3/8 D6 3 SP/PT Plug HSS Uncoated 58
    $19.51
  • A77444 ACT M6 x 1.0 0.2550 2-1/2 D9 None Single Thread HSS Uncoated 100
    $15.74
  • A77240 ACT 1/2-20 0.3670 3-3/8 H3 4 Plug HSS Uncoated 63
    $56.24
  • A77239 ACT 1/2-20 0.3670 3-3/8 H3 4 Taper HSS TiN 10
    $60.22
  • A57990 ACT M12 X 1.75 0.367 3-3/8 D6 4 Bottoming HSS TIN 22
    $30.80
  • A57846 ACT 5/16-18 0.318 2-23/32 H3 4 Taper HSS TIN 76
    $12.70
  • A55934 ACT 5/16-18 0.318 2-23/32 H7 2 Plug HSS TiN 7
    $22.68
  • A55810 ACT 4-48 0.141 1-7/8 H2 2 High Spiral HSS Uncoated 41
    $21.85
  • A54964 ACT M24 X 3.0 0.76 4-29/32 D8 4 Taper, Plug, Bottoming HSS Uncoated 6
    $256.33
  • A54732 ACT 12-24 0.22 2-3/8 H3 2 Spiral Point Bottoming HSS Uncoated 38
    $9.82
  • A54584 ACT 4-48 0.141 1-7/8 H2 2 Spiral Point Plug HSS STEAM OXIDE 64
    $9.60
  • A54257 ACT 3/8-24 0.381 2-15/16 H3 4 Bottoming HSS NIT/ST 27
    $9.19
  • A54123 ACT 12-24 0.22 2-3/8 H3 4 Taper, Plug, Bottoming HSS Uncoated 16
    $17.36
  • A54032 ACT 8-32 0.168 2-1/8 H3 4 Taper HSS STEAM OXIDE 100
    $5.93
  • A79046 ACT 10-24 0.1940 2-3/8 H3 4 Taper, Plug, Bottoming HSS TiN 4
    $41.80
  • A77621 ACT 12-24 0.2200 2-3/8 H3 2 SP/PT Bottom HSS TiN 10
    $16.32
  • A77530 ACT M6 X 1.0 0.2550 2-1/2 D9 None Plug HSS Uncoated 12
    $15.74
  • A77465 ACT M12 x 1.50 0.3670 3-3/8 D6 3 SP/PT Plug HSS TiN 7
    $23.52
  • A77342 ACT 4-40 0.1410 1-7/8 H2 2 Semi Bottom HSS ZRN 17
    $25.91
  • A77242 ACT 1/2-20 0.3670 3-3/8 H3 4 Bottom HSS Uncoated 65
    $56.24
  • A77241 ACT 1/2-20 0.3670 3-3/8 H3 4 Plug HSS TiN 22
    $60.22
  • A57941 ACT M14 X 1.5 0.429 3-19/32 D6 4 Taper HSS TIN 13
    $46.06
  • A57914 ACT 12-24 0.22 2-3/8 H3 4 Taper, Plug, Bottoming HSS TIN Available to Order*
    $28.04
  • A57870 ACT 5/16-18 0.318 2-23/32 H3 4 Plug HSS TIN 7
    $12.70
  • A55935 ACT 5/16-24 0.318 2-23/32 H5 2 Plug HSS TiN 5
    $22.68
  • A54898 ACT M10 X 1.25 0.381 2-15/16 D5 4 Taper HSS Uncoated 15
    $15.63
  • A54583 ACT 4-48 0.141 1-7/8 H2 2 Spiral Point Plug HSS NIT/ST 33
    $9.82
  • A54254 ACT 3/8-24 0.381 2-15/16 H3 4 Plug HSS NIT/ST 88
    $9.19
  • A54035 ACT 8-32 0.168 2-1/8 H3 4 Plug HSS STEAM OXIDE 100
    $5.93
  • A53920 ACT 4-40 0.141 1-7/8 H1 3 Taper HSS Uncoated 70
    $6.93
  • A79047 ACT 10-32 0.1940 2-3/8 H3 4 Taper, Plug, Bottoming HSS TiN 6
    $41.80
  • A77531 ACT M6 X 1.0 0.2550 2-1/2 D9 None Bottom HSS Uncoated 84
    $15.74
  • A77343 ACT 4-48 0.1410 1-7/8 H2 2 Semi Bottom HSS ZRN 12
    $25.91
  • A77244 ACT 5/8-11 0.4800 3-13/16 H3 4 Taper HSS Uncoated 17
    $75.07
  • A77243 ACT 1/2-20 0.3670 3-3/8 H3 4 Bottom HSS TiN 17
    $60.22
  • A57942 ACT M14 X 2.0 0.429 3-19/32 D7 4 Taper HSS TIN 11
    $46.06
  • A57894 ACT 5/16-18 0.318 2-23/32 H3 4 Bottoming HSS TIN 20
    $12.70
  • A55936 ACT 5/16-24 0.318 2-23/32 H7 2 Plug HSS TiN 3
    $22.68
  • A54981 ACT M14 X 2.0 0.429 3-19/32 D7 3 Spiral Point Plug HSS Uncoated 27
    $32.24
  • A54899 ACT M10 X 1.25 0.381 2-15/16 D5 4 Plug HSS Uncoated 100
    $15.63
  • A54588 ACT 5-40 0.141 1-15/16 H1 2 Spiral Point Plug HSS Uncoated 56
    $8.82
  • A54273 ACT 7/16-14 0.323 3-5/32 H3 4 Bottoming HSS NIT/ST 62
    $15.79
  • A54133 ACT 12-28 0.22 2-3/8 H3 4 Taper, Plug, Bottoming HSS Uncoated 7
    $18.59
  • A54038 ACT 8-32 0.168 2-1/8 H3 4 Bottoming HSS STEAM OXIDE 100
    $5.93
  • A53926 ACT 4-40 0.141 1-7/8 H2 3 Taper HSS Uncoated 100
    $6.48
  • A77300 ACT 5/16-18 0.3180 2.7188" H5 None Plug HSS Uncoated 52
    $16.66
  • A77246 ACT 5/8-11 0.4800 3-13/16 H3 4 Plug HSS Uncoated 20
    $75.07
  • A77245 ACT 5/8-11 0.4800 3-13/16 H3 4 Taper HSS TiN 7
    $80.51
  • A57968 ACT M14 X 1.5 0.429 3-19/32 D6 4 Plug HSS TIN 17
    $46.06
  • A57915 ACT 12-28 0.22 2-3/8 H3 4 Taper, Plug, Bottoming HSS TIN Available to Order*
    $31.14
  • A57847 ACT 5/16-24 0.318 2-23/32 H3 4 Taper HSS TIN 8
    $12.70
  • A57615 ACT M14 X 2.0 0.429 3-19/32 D7 3 Spiral Point Plug HSS TIN 5
    $41.44
  • A55890 ACT M8 X 1.25 0.318 2-23/32 D9 Plug HSS TiN 83
    $24.37
  • A55811 ACT 5-40 0.141 1-15/16 H3 2 High Spiral HSS Uncoated 12
    $21.85
  • A54900 ACT M10 X 1.25 0.381 2-15/16 D5 4 Bottoming HSS Uncoated 11
    $15.63

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

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