Spiral Flute - Semi Bottoming

Spiral Flute - Semi Bottoming

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

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

  • 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
    A77360 ACT 7/16-14 0.3230 3.1563" H3 3 Semi Bottom HSS ZRN Available to Order*
    $46.16
  • A77361 ACT 7/16-20 0.3230 3.1563" H3 3 Semi Bottom HSS ZRN Available to Order*
    $46.16
  • A55829 ACT 1/2-13 0.367 3-3/8 H3 3 High Spiral HSS Uncoated 14
    $47.54
  • A55830 ACT 1/2-20 0.367 3-3/8 H3 3 High Spiral HSS Uncoated 24
    $47.54
  • A77362 ACT 1/2-13 0.3670 3-3/8 H3 3 Semi Bottom HSS ZRN Available to Order*
    $56.71
  • A77363 ACT 1/2-20 0.3670 3-3/8 H3 3 Semi Bottom HSS ZRN Available to Order*
    $56.71

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

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