Spiral Flute - Semi Bottoming

Spiral Flute - Semi Bottoming

Atlas High Speed Steel (HSS) Spiral Flute - Semi Bottoming - Metric

General Purpose - Spiral Flute - Semi Bottoming - High Speed Steel - Metric

  • Optimized for relatively deep hole tapping in copper, brass, aluminum, and other soft ductile materials
  • ZrN coating offers increased speed rates and prolonged tool life
  • 52° Helix
  • Slightly longer chamfer distributes cutting over greater number of teeth for increased production
  • Can be used for plug or bottoming applications
  • Made in the USA

Speeds and Feed Info

Have a question or need help?

Call Customer Service at 908-98-ATLAS or email: Sales@atlascuttingtools.com
  • 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
    A55837 ACT M3 X 0.5 0.141 1-15/16 D3 2 High Spiral HSS Uncoated 18
    $21.69
  • A77369 ACT M3 X 0.5 0.1410 1-15/16 D3 2 Semi Bottom HSS ZRN Available to Order*
    $26.41
  • A55838 ACT M3.5 X 0.6 0.141 2 D4 3 High Spiral HSS Uncoated 7
    $17.49
  • A77370 ACT M3.5 X 0.6 0.1410 2 D4 3 Semi Bottom HSS ZRN Available to Order*
    $21.13
  • A55839 ACT M4 X 0.7 0.168 2-1/8 D4 3 High Spiral HSS Uncoated 37
    $17.49
  • A77371 ACT M4 X 0.7 0.1680 2-1/8 D4 3 Semi Bottom HSS ZRN Available to Order*
    $22.14
  • A55840 ACT M4.5 X 0.75 0.194 2-3/8 D4 3 High Spiral HSS Uncoated 50
    $17.49
  • A55841 ACT M5 X 0.8 0.194 2-3/8 D4 3 High Spiral HSS Uncoated 26
    $17.49
  • A77372 ACT M5 X 0.8 0.1940 2-3/8 D4 3 Semi Bottom HSS ZRN Available to Order*
    $22.60
  • A55842 ACT M6 X 1.0 0.255 2-1/2 D5 3 High Spiral HSS Uncoated 17
    $19.22
  • A77373 ACT M6 X 1.0 0.2550 2-1/2 D5 3 Semi Bottom HSS ZRN Available to Order*
    $24.15
  • A55843 ACT M8 X 1.25 0.238 2-23/32 D5 3 High Spiral HSS Uncoated 100
    $23.71
  • A77374 ACT M8 X 1.25 0.2380 2.7188" D5 3 Semi Bottom HSS ZRN Available to Order*
    $27.92
  • A55844 ACT M10 X 1.5 0.286 2-15/16 D6 3 High Spiral HSS Uncoated 24
    $40.99
  • A77375 ACT M10 X 1.5 0.2860 2-15/16 D6 3 Semi Bottom HSS ZRN Available to Order*
    $45.12
  • A55845 ACT M12 X 1.75 0.275 3-3/8 D6 3 High Spiral HSS Uncoated 18
    $49.07
  • A77376 ACT M12 X 1.75 0.2750 3-3/8 D6 3 Semi Bottom HSS ZRN Available to Order*
    $56.46

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

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