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
    A55008 ACT 3/8-18 0.7 2-9/16 5 NPT - Interrupted HSS Uncoated 18
    $54.01
  • A54988 ACT 1/4-18 0.5625 2-7/16 4 NPT HSS Uncoated 100
    $27.58
  • A54855 ACT 1/4-28 0.255 2-1/2 H4 2 Bottoming HSS TiN 21
    $20.46
  • A54806 ACT 1/2-13 0.507 6 H3 4 Pulley HSS Uncoated 81
    $72.90
  • A54788 ACT 1/4-28 0.255 2-1/2 H2 2 STI - Spiral Point Plug HSS Uncoated 27
    $20.42
  • A54563 ACT 1-72 0.141 1-11/16 H2 2 Spiral Point Plug HSS Uncoated 100
    $14.23
  • A54555 ACT 5/8-11 0.48 3-13/16 H11 4 Plug HSS Uncoated 21
    $49.52
  • A53918 ACT 3-56 0.141 1-13/16 H2 3 Taper, Plug, Bottoming HSS Uncoated 3
    $21.11
  • A53879 ACT 1-72 0.141 1-11/16 H1 2 Taper HSS Uncoated 100
    $11.88
  • A79053 ACT 3/8-24 0.3810 2-15/16 H3 4 Taper, Plug, Bottoming HSS TiN 2
    $66.30
  • A77591 ACT 1-11-1/2 1.1250 (1-1/8)" 3-3/4 nan 5 nan HSS Uncoated 9
    $219.42
  • A77563 ACT 1-1/2-8 1.2330 6-3/8 H5 4 Bottom HSS Uncoated 15
    $252.65
  • A77552 ACT M3 X 0.6 0.1410 1-15/16 D2 3 Bottom HSS Uncoated 13
    $10.38
  • A77466 ACT M4 x 0.5 0.1680 2-1/8 D4 2 SP/PT Plug HSS Uncoated 12
    $10.38
  • A77439 ACT M2.5 x 0.45 0.1410 1-13/16 D6 None Single Thread HSS Uncoated 11
    $16.44
  • A77410 ACT 3/8-16 0.2750 6 H3 3 SP/PT Plug HSS ALTiN 11
    $93.41
  • A77373 ACT M6 X 1.0 0.2550 2-1/2 D5 3 Semi Bottom HSS ZRN 15
    $24.15
  • A77358 ACT 3/8-16 0.3810 2-15/16 H3 3 Semi Bottom HSS ZRN 17
    $33.22
  • A77335 ACT 8-32 0.1680 2-1/8 H3 4 Taper HSS Uncoated 79
    $22.40
  • A77263 ACT 10-24 0.1940 2-3/8 H3 4 Bottom HSS TiN 33
    $30.43
  • A57958 ACT M4 X 0.7 0.168 2-1/8 D4 4 Plug HSS TIN 19
    $12.16
  • A57861 ACT 5-40 0.141 1-15/16 H2 3 Plug HSS TIN 10
    $10.80
  • A57647 ACT 3/8-18 0.7 2-9/16 5 NPT - Interrupted HSS STEAM OXIDE 23
    $58.35
  • A57626 ACT 1/4-18 0.5625 2-7/16 4 NPT HSS TIN 22
    $36.54
  • A55856 ACT 10-24 0.194 2-3/8 H2 3 Hand Plug HSS Uncoated 27
    $17.57
  • A55068 ACT 1-11-1/2 1.125 3-3/4 5 NPS HSS Uncoated 23
    $195.92
  • A55040 ACT 3/4-14 0.9063 3-1/4 5 NPTF Dryseal - Interrupted HSS Uncoated 22
    $100.07
  • A55029 ACT 1/2-14 0.6875 3-1/8 4 NPTF Dryseal HSS Uncoated 23
    $63.71
  • A54951 ACT M7 X 1.0 0.318 2-23/32 D5 4 Taper, Plug, Bottoming HSS Uncoated 10
    $23.95
  • A54856 ACT 1/4-28 0.255 2-1/2 H6 2 Bottoming HSS TiN 20
    $20.46
  • A54807 ACT 1/2-13 0.507 8 H3 4 Pulley HSS Uncoated 9
    $95.81
  • A54789 ACT 5/16-18 0.318 2-23/32 H3 3 STI - Spiral Point Plug HSS Uncoated 8
    $25.78
  • A54719 ACT 2-56 0.141 1-3/4 H2 2 Spiral Point Bottoming HSS Uncoated 28
    $22.06
  • A54564 ACT 1-72 0.141 1-11/16 H2 2 Spiral Point Plug HSS STEAM OXIDE 18
    $14.96
  • A53990 ACT 6-32 0.141 2 H2 3 Bottoming HSS NIT/ST Available to Order*
    $6.14
  • A53880 ACT 1-72 0.141 1-11/16 H1 2 Plug HSS Uncoated 15
    $11.88
  • A79032 ACT 7/16-14 0.3230 3.1563 H3 4 Taper, Plug, Bottoming HSS Uncoated 10
    $70.50
  • A77608 ACT 2-56 0.1410 1-3/4 H2 2 SP/PT Bottom HSS TiN 24
    $26.03
  • A77606 ACT 1-11-1/2 1.1250 (1-1/8)" 3-3/4 nan 5 nan HSS TiN 6
    $233.07
  • A77564 ACT 1-5/8-8 1.3050 6.6875" H6 6 Taper HSS Uncoated 17
    $344.38
  • A77522 ACT M2.5 X .45 0.1410 1-13/16 D6 None Bottom HSS TiN 15
    $20.01
  • A77467 ACT M4 x 0.5 0.1680 2-1/8 D4 2 SP/PT Plug HSS TiN 8
    $12.60
  • A77411 ACT 3/8-24 0.2750 6 H3 3 SP/PT Plug HSS ALTiN 4
    $86.75
  • A77359 ACT 3/8-24 0.3810 2-15/16 H3 3 Semi Bottom HSS ZRN 6
    $37.25
  • A77265 ACT 10-32 0.1940 2-3/8 H3 4 Plug HSS Uncoated 80
    $27.78
  • A77264 ACT 10-32 0.1940 2-3/8 H3 4 Taper HSS TiN 21
    $30.43
  • A77213 ACT M4 X 0.7 0.1680 2-1/8 D4 4 Bottom HSS TiN 32
    $11.34
  • A58406 ACT 1-11-1/2 1.125 3-3/4 5 NPS HSS TIN 3
    $152.06
  • A58396 ACT 3/4-14 0.9063 3-1/4 5 NPTF Dryseal - Interrupted HSS TIN 7
    $149.88
  • A58385 ACT 1/2-14 0.6875 3-1/8 4 NPTF Dryseal HSS TIN 5
    $77.84
  • A58008 ACT M7 X 1.0 0.318 2-23/32 D5 4 Taper, Plug, Bottoming HSS TIN Available to Order*
    $39.58
  • A57885 ACT 5-40 0.141 1-15/16 H2 3 Bottoming HSS TIN 18
    $10.80
  • A57648 ACT 3/8-18 0.7 2-9/16 5 NPT - Interrupted HSS TIN 10
    $67.13
  • A57625 ACT 1/4-18 0.5625 2-7/16 4 NPT HSS STEAM OXIDE 23
    $31.22
  • A55928 ACT 1/4-20 0.255 2-1/2 H3 2 Plug HSS TiN 22
    $20.46
  • A55857 ACT 10-24 5.141 1-7/13 H2 3 Hand Bottoming HSS Uncoated 27
    $17.57
  • A55843 ACT M8 X 1.25 0.238 2-23/32 D5 3 High Spiral HSS Uncoated 100
    $24.54
  • A54881 ACT M3.5 X 0.6 0.141 2 D4 3 Plug HSS Uncoated 22
    $7.13
  • A54808 ACT 1/2-13 0.507 10 H3 4 Pulley HSS Uncoated 13
    $85.19
  • A54790 ACT 5/16-24 0.318 2-23/32 H2 3 STI - Spiral Point Plug HSS Uncoated 39
    $25.90
  • A54565 ACT 2-56 0.141 1-3/4 H1 2 Spiral Point Plug HSS Uncoated 17
    $13.49
  • A53987 ACT 6-32 0.141 2 H2 3 Plug HSS NIT/ST 100
    $6.14
  • A53923 ACT 4-40 0.141 1-7/8 H1 3 Taper, Plug, Bottoming HSS Uncoated 8
    $20.91
  • A53883 ACT 1-72 0.141 1-11/16 H2 2 Plug HSS Uncoated 24
    $11.88
  • A79033 ACT 7/16-20 0.3230 3.1563 H3 4 Taper, Plug, Bottoming HSS Uncoated 6
    $70.50
  • A77565 ACT 1-5/8-8 1.3050 6.6875" H6 6 Plug HSS Uncoated 6
    $344.38
  • A77374 ACT M8 X 1.25 0.2380 2.7188" D5 3 Semi Bottom HSS ZRN 5
    $27.92
  • A77267 ACT 10-32 0.1940 2-3/8 H3 4 Bottom HSS Uncoated 87
    $27.78
  • A77266 ACT 10-32 0.1940 2-3/8 H3 4 Plug HSS TiN 31
    $30.43
  • A57959 ACT M4.5 X 0.75 0.194 2-3/8 D4 4 Plug HSS TIN 6
    $12.16
  • A57838 ACT 6-32 0.141 2 H3 3 Taper HSS TIN 22
    $8.82
  • A55929 ACT 1/4-20 0.255 2-1/2 H4 2 Plug HSS TiN 9
    $20.46
  • A55883 ACT M3 X 0.5 0.141 1-15/16 D5 Bottoming HSS TiN 22
    $21.44
  • A55858 ACT 10-32 0.194 2-3/8 H2 3 Hand Plug HSS Uncoated 67
    $18.10
  • A55827 ACT 7/16-14 0.323 3-5/32 H3 3 High Spiral HSS Uncoated 19
    $41.23
  • A55055 ACT 7/16-14 0.323 6 H3 NC .242 13/32 1-7/16 3 Spiral Point Plug HSS Uncoated 20
    $94.26
  • A55030 ACT 3/4-14 0.9063 3-1/4 5 NPTF Dryseal HSS Uncoated 16
    $89.06
  • A55009 ACT 1/2-14 0.6875 3-1/8 5 NPT - Interrupted HSS Uncoated 56
    $85.92
  • A54989 ACT 3/8-18 0.7 2-9/16 4 NPT HSS Uncoated 100
    $36.48
  • A54974 ACT M4.5 X 0.75 0.194 2-3/8 D4 2 Spiral Point Plug HSS Uncoated 100
    $8.66
  • A54952 ACT M8 X 1.25 0.318 2-23/32 D5 4 Taper, Plug, Bottoming HSS Uncoated 14
    $23.95
  • A54882 ACT M4 X 0.7 0.168 2-1/8 D4 4 Taper HSS Uncoated 100
    $7.13
  • A54809 ACT 1/2-13 0.507 12 H3 4 Pulley HSS Uncoated 10
    $104.80
  • A54791 ACT 3/8-16 0.381 2-15/16 H3 3 STI - Spiral Point Plug HSS Uncoated 19
    $31.53
  • A54720 ACT 3-48 0.141 1-13/16 H2 2 Spiral Point Bottoming HSS Uncoated 16
    $17.81
  • A54566 ACT 2-56 0.141 1-3/4 H2 2 Spiral Point Plug HSS Uncoated 60
    $12.04
  • A54009 ACT 6-40 0.141 2 H2 3 Bottoming HSS NIT/ST 20
    $6.14
  • A53934 ACT 4-40 0.141 1-7/8 H2 3 Taper, Plug, Bottoming HSS Uncoated 16
    $20.91
  • A53909 ACT 3-48 0.141 1-13/16 H2 3 Taper HSS STEAM OXIDE 22
    $8.70
  • A53881 ACT 1-72 0.141 1-11/16 H1 2 Bottoming HSS Uncoated 61
    $11.88
  • A79034 ACT 1/2-13 0.3670 3-3/8 H3 4 Taper, Plug, Bottoming HSS Uncoated 2
    $70.50
  • A77609 ACT 3-48 0.1410 1-13/16 H2 2 SP/PT Bottom HSS TiN 20
    $19.67
  • A77566 ACT 1-5/8-8 1.3050 6.6875" H6 6 Bottom HSS Uncoated 15
    $344.38
  • A77394 ACT M3 X 0.5 0.1410 1-15/16 D6 None Single Thread HSS TiN 21
    $20.01
  • A77268 ACT 10-32 0.1940 2-3/8 H3 4 Bottom HSS TiN 28
    $30.43
  • A77173 ACT 3/4-10 0.5900 4-1/4 H3 4 Taper HSS Uncoated 15
    $105.08
  • A58386 ACT 3/4-14 0.9063 3-1/4 5 NPTF Dryseal HSS TIN 11
    $109.46
  • A57933 ACT M5 X 0.8 0.194 2-3/8 D4 4 Taper HSS TIN 18
    $12.16
  • A57908 ACT 4-40 0.141 1-7/8 H2 3 Taper, Plug, Bottoming HSS TIN Available to Order*
    $31.91
  • A57862 ACT 6-32 0.141 2 H3 3 Plug HSS TIN 39
    $8.82

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

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