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
    A79027 ACT 1/4-20 0.2550 2-1/2 H3 4 Taper, Plug, Bottoming HSS Uncoated Available to Order*
    $27.41
  • A77592 ACT 1/8-27 0.4375 (7/16)" 2-1/8 nan 4 nan HSS NITRIDE & STEAM OXIDE Available to Order*
    $27.12
  • A77586 ACT 1/8-27 0.4375 (7/16)" 2-1/8 nan 4 nan HSS Uncoated Available to Order*
    $44.06
  • A77553 ACT 1-1/8-8 0.8960 5.4375" H5 4 Taper HSS Uncoated Available to Order*
    $149.78
  • A77377 ACT M1.6 X 0.35 0.1410 1-5/8 D5 None Bottom HSS Uncoated Available to Order*
    $16.44
  • A77197 ACT 1-8 0.8000 5.1250" H4 4 Plug HSS TiN Available to Order*
    $172.58
  • A77195 ACT 1-8 0.8000 5.1250" H4 4 Taper HSS Uncoated Available to Order*
    $162.00
  • A57953 ACT M1.6 X 0.35 0.141 1-5/8 D3 2 Plug HSS TIN 11
    $27.67
  • A57834 ACT 0-80 0.141 1-5/8 H1 2 Taper HSS TIN 10
    $20.66
  • A55896 ACT 6-32 0.141 2 H11 3 Plug HSS Uncoated 18
    $7.88
  • A55846 ACT 4-40 0.141 1-7/8 H1 3 Hand Plug HSS Uncoated 100
    $16.41
  • A55837 ACT M3 X 0.5 0.141 1-15/16 D3 2 High Spiral HSS Uncoated 18
    $21.69
  • A55821 ACT 1/4-20 0.255 2-1/2 H3 3 High Spiral HSS Uncoated 73
    $18.43
  • A55069 ACT 1/8-27 6 4 NPT HSS Uncoated 16
    $72.45
  • A55063 ACT 1/8-27 0.4375 2-1/8 4 NPS HSS Uncoated 100
    $38.60
  • A55049 ACT 1/4-20 0.185 6 H3 NC .139 5/16 1 2 Spiral Point Plug HSS Uncoated 17
    $70.34
  • A55035 ACT 1/8-27 0.3125 2-1/8 5 NPTF Dryseal - Interrupted HSS Uncoated 100
    $41.28
  • A55024 ACT 1/16-27 0.3125 2-1/8 4 NPTF Dryseal HSS Uncoated 17
    $26.47
  • A55005 ACT 1/8-27 0.3125 2-1/8 5 NPT - Interrupted HSS Uncoated 40
    $37.32
  • A54985 ACT 1/16-27 0.3125 2-1/8 4 NPT HSS Uncoated 46
    $23.96
  • A54969 ACT M2 X 0.4 0.141 1-3/4 D3 2 Spiral Point Plug HSS Uncoated 100
    $16.79
  • A54946 ACT M2 X 0.4 0.141 1-3/4 D3 3 Taper, Plug, Bottoming HSS Uncoated 11
    $49.69
  • A54873 ACT M1.6 X 0.35 0.141 1-5/8 D3 2 Plug HSS Uncoated 83
    $16.46
  • A54816 ACT 0-80 0.141 1-5/8 H2 0 Bottoming HSS TiN 23
    $24.37
  • A54797 ACT 1/4-20 0.255 6 H3 4 Pulley HSS Uncoated 7
    $55.34
  • A54779 ACT 4-40 0.141 1-7/8 H1 2 STI - Spiral Point Plug HSS Uncoated 22
    $18.27
  • A54737 ACT 1/4-20 0.255 2-1/2 H11 4 Spiral Point Plug HSS Uncoated 30
    $11.76
  • A54718 ACT 0-80 0.141 1-5/8 H2 2 Spiral Point Bottoming HSS Uncoated 37
    $28.04
  • A54556 ACT 0-80 0.141 1-5/8 H1 2 Spiral Point Plug HSS Uncoated 100
    $15.18
  • A53868 ACT 0-80 0.141 1-5/8 H1 2 Taper, Plug, Bottoming HSS Uncoated 8
    $38.14
  • A53863 ACT 0-80 0.141 1-5/8 H1 2 Taper HSS STEAM OXIDE 20
    $13.07
  • A53862 ACT 0-80 0.141 1-5/8 H1 2 Taper HSS Uncoated 60
    $12.29
  • A79048 ACT 1/4-20 0.2550 2-1/2 H3 4 Taper, Plug, Bottoming HSS TiN Available to Order*
    $46.91
  • A77607 ACT 0-80 0.1410 1-5/8 H2 2 SP/PT Bottom HSS TiN Available to Order*
    $34.02
  • A77601 ACT 1/8-27 0.4375 (7/16)" 2-1/8 nan 4 nan HSS TiN Available to Order*
    $48.47
  • A77593 ACT 1/4-18 0.5625 (9/16)" 2-7/16 nan 4 nan HSS NITRIDE & STEAM OXIDE Available to Order*
    $30.47
  • A77554 ACT 1-1/8-8 0.8960 5.4375" H5 4 Plug HSS Uncoated Available to Order*
    $149.78
  • A77519 ACT M1.6 X 0.35 0.1410 1-5/8 D5 None Bottom HSS TiN Available to Order*
    $20.25
  • A77369 ACT M3 X 0.5 0.1410 1-15/16 D3 2 Semi Bottom HSS ZRN Available to Order*
    $26.41
  • A77199 ACT 1-8 0.8000 5.1250" H4 4 Bottom HSS TiN Available to Order*
    $172.58
  • A77196 ACT 1-8 0.8000 5.1250" H4 4 Plug HSS Uncoated Available to Order*
    $162.00
  • A58407 ACT 1/8-27 6 4 NPT HSS TIN 16
    $100.89
  • A58401 ACT 1/8-27 0.4375 2-1/8 4 NPS HSS TIN 17
    $53.81
  • A58391 ACT 1/8-27 0.3125 2-1/8 5 NPTF Dryseal - Interrupted HSS TIN 5
    $57.40
  • A58380 ACT 1/16-27 0.3125 2-1/8 4 NPTF Dryseal HSS TIN 10
    $36.99
  • A57930 ACT M2 X 0.4 0.141 1-3/4 D3 3 Taper HSS TIN 4
    $27.67
  • A57906 ACT 0-80 0.141 1-5/8 H1 2 Taper, Plug, Bottoming HSS TIN Available to Order*
    $65.70
  • A57858 ACT 0-80 0.141 1-5/8 H1 2 Plug HSS TIN 29
    $20.66
  • A57641 ACT 1/8-27 0.3125 2-1/8 5 NPT - Interrupted HSS STEAM OXIDE 52
    $39.26
  • A57620 ACT 1/16-27 0.3125 2-1/8 4 NPT HSS TIN 20
    $29.65
  • A57603 ACT M2 X 0.4 0.141 1-3/4 D3 2 Spiral Point Plug HSS TIN 32
    $21.65
  • A55897 ACT 8-32 0.168 2-1/8 H11 4 Plug HSS Uncoated 85
    $7.88
  • A55847 ACT 4-40 0.141 1-7/8 H1 3 Hand Bottoming HSS Uncoated 16
    $16.41
  • A55822 ACT 1/4-28 0.255 2-1/2 H3 3 High Spiral HSS Uncoated 22
    $18.43
  • A55050 ACT 1/4-28 0.185 6 H3 NF .139 5/16 1 2 Spiral Point Plug HSS Uncoated 17
    $70.34
  • A54874 ACT M2 X 0.4 0.141 1-3/4 D3 3 Taper HSS Uncoated 33
    $16.46
  • A54817 ACT 0-80 0.141 1-5/8 H3 0 Bottoming HSS TiN 24
    $24.37
  • A54798 ACT 1/4-20 0.255 8 H3 4 Pulley HSS Uncoated 18
    $68.45
  • A54780 ACT 5-40 0.141 1-15/16 H1 2 STI - Spiral Point Plug HSS Uncoated 15
    $18.27
  • A54738 ACT 5/16-18 0.318 2-23/32 H11 4 Spiral Point Plug HSS Uncoated 17
    $13.53
  • A54557 ACT 0-80 0.141 1-5/8 H2 2 Spiral Point Plug HSS Uncoated 82
    $15.18
  • A53865 ACT 0-80 0.141 1-5/8 H1 2 Plug HSS STEAM OXIDE 79
    $13.07
  • A53864 ACT 0-80 0.141 1-5/8 H1 2 Plug HSS Uncoated 22
    $12.29
  • A79049 ACT 1/4-28 0.2550 2-1/2 H3 4 Taper, Plug, Bottoming HSS TiN Available to Order*
    $46.91
  • A77594 ACT 3/8-18 0.7000 2-9/16 nan 4 nan HSS NITRIDE & STEAM OXIDE Available to Order*
    $39.84
  • A77587 ACT 1/4-18 0.5625 (9/16)" 2-7/16 nan 4 nan HSS Uncoated Available to Order*
    $48.76
  • A77555 ACT 1-1/8-8 0.8960 5.4375" H5 4 Bottom HSS Uncoated Available to Order*
    $149.78
  • A77406 ACT 1/4-20 0.1850 6 H3 2 SP/PT Plug HSS ALTiN Available to Order*
    $74.57
  • A77378 ACT M1.7 X 0.35 0.1410 1-5/8 D5 None Bottom HSS Uncoated Available to Order*
    $16.44
  • A77354 ACT 1/4-20 0.2550 2-1/2 H3 3 Semi Bottom HSS ZRN Available to Order*
    $23.44
  • A77205 ACT 0-80 0.1410 1-5/8 H2 None Single Thread HSS Uncoated Available to Order*
    $19.93
  • A77202 ACT 1-14 0.8000 5.1250" H4 4 Plug HSS TiN Available to Order*
    $172.58
  • A77198 ACT 1-8 0.8000 5.1250" H4 4 Bottom HSS Uncoated Available to Order*
    $162.00
  • A57954 ACT M2 X 0.4 0.141 1-3/4 D3 3 Plug HSS TIN 16
    $27.67
  • A57882 ACT 0-80 0.141 1-5/8 H1 2 Bottoming HSS TIN 8
    $20.66
  • A57642 ACT 1/8-27 0.3125 2-1/8 5 NPT - Interrupted HSS TIN 18
    $45.32
  • A57619 ACT 1/16-27 0.3125 2-1/8 4 NPT HSS STEAM OXIDE 17
    $25.98
  • A55898 ACT 10-24 0.194 2-3/8 H11 4 Plug HSS Uncoated 36
    $6.11
  • A55848 ACT 5-40 0.141 1-15/16 H1 3 Hand Plug HSS Uncoated 41
    $16.41
  • A55838 ACT M3.5 X 0.6 0.141 2 D4 3 High Spiral HSS Uncoated 7
    $17.49
  • A55070 ACT 1/4-18 6 4 NPT HSS Uncoated Available to Order*
    $83.04
  • A55064 ACT 1/4-18 0.5625 2-7/16 4 NPS HSS Uncoated 22
    $42.47
  • A55036 ACT 1/8-27 0.4375 2-1/8 5 NPTF Dryseal - Interrupted HSS Uncoated 37
    $41.28
  • A55025 ACT 1/8-27 0.3125 2-1/8 4 NPTF Dryseal HSS Uncoated 20
    $26.47
  • A54970 ACT M2.5 X 0.45 0.141 1-13/16 D3 2 Spiral Point Plug HSS Uncoated 100
    $11.92
  • A54947 ACT M3 X 0.5 0.141 1-15/16 D3 3 Taper, Plug, Bottoming HSS Uncoated 9
    $25.44
  • A54875 ACT M2 X 0.4 0.141 1-3/4 D3 3 Plug HSS Uncoated 19
    $16.46
  • A54799 ACT 5/16-18 0.318 6 H3 4 Pulley HSS Uncoated 40
    $58.63
  • A54781 ACT 6-32 0.141 2 H2 2 STI - Spiral Point Plug HSS Uncoated 20
    $18.31
  • A54739 ACT 3/8-16 0.381 2-15/16 H11 4 Spiral Point Plug HSS Uncoated 100
    $15.26
  • A54733 ACT 1/4-20 0.255 2-1/2 H3 2 Spiral Point Bottoming HSS Uncoated 100
    $11.55
  • A54558 ACT 0-80 0.141 1-5/8 H2 2 Spiral Point Plug HSS STEAM OXIDE 41
    $16.29
  • A53932 ACT 4-40 0.141 1-7/8 H2 3 Bottoming HSS NIT/ST 100
    $7.22
  • A53869 ACT 0-80 0.141 1-5/8 H2 2 Plug HSS Uncoated 6
    $12.29
  • A53867 ACT 0-80 0.141 1-5/8 H1 2 Bottoming HSS STEAM OXIDE 21
    $13.07
  • A79028 ACT 5/16-18 0.3180 2.7188 H3 4 Taper, Plug, Bottoming HSS Uncoated Available to Order*
    $33.52
  • A77602 ACT 1/4-18 0.5625 (9/16)" 2-7/16 nan 4 nan HSS TiN Available to Order*
    $54.90
  • A77595 ACT 1/2-14 0.6875 (11/16)" 3-1/8 nan 4 nan HSS NITRIDE & STEAM OXIDE Available to Order*
    $61.56
  • A77556 ACT 1-1/4-8 1.0210 5.7500" H5 4 Taper HSS Uncoated Available to Order*
    $182.38
  • A77520 ACT M1.7 X 0.35 0.1410 1-5/8 D5 None Bottom HSS TiN Available to Order*
    $20.25

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

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