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5/16" Super Primalloy® Maintenance Length Left Hand Cobalt Drill Bit

5/16" Super Primalloy® Maintenance Length Left Hand Cobalt Drill Bit

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Item Number: 828420
Package Weight: 0 lbs
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Product Details

  • Maintenance Length
    Reduced overall length provides increased rigidity, strength and breakage resistance.
  • Broken Fastener Removal
    The left hand drill rotation can cause a fastener to back out when drilling, eliminating the need to use screw extractors to remove broken fasteners.
  • 135° Split Point
    Super heavy-duty 135° split point eliminates center punching.
  • M-35 Cobalt Alloy
    Provides increased heat resistance to prevent dulling while cutting tough alloys and hard materials such as stainless steels, iron based and titanium alloys.
  • Gold Surface Treatment
    Cobalt-Gold body provides excellent lubricity for increased drill life and prevents corrosion and rust.
  • MADE IN THE U.S.A.

Product Specification

Brand:  Super Primalloy®
Diameter:  5/16"
Finish:  Gold
Flute Length:  2-1/8"
Hand:  Left Hand
Material:  M-35 Cobalt Alloy
New Product Release:  September 2026
Overall Length:  3-3/4"
Series:  Super Primalloy® Cobalt
Sold As:  Individual
Subcategory:  Maintenance Length Drill Bits
Tip Style:  135° Split Point
Warranty:  30 Day
 

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