IRWIN Cobalt High Speed Steel Drill Bit, 1/4"
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IRWIN Cobalt High Speed Steel Drill Bit, 1/4"

Item # 172966 OfficeMax # 24090993
  • 8% Cobalt for higher heat and abrasion resistance
  • Heavy-duty web construction for strength and durability
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$6.59 $6.59
/ each
  • Quantity

In Stock

  • Estimated delivery 3-5 business days
Pricing, Assortment and Availability

    • 8% Cobalt for higher heat and abrasion resistance 
    • Heavy-duty web construction for strength and durability 
    • 135º split point begins drilling immediately, minimizing bit "walk" 

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    Item # 172966 
    Manufacturer # 585-63116  
    weight 0.04 lb
    brand name Irwin
    Spiral Angle CW
    Type Drill Bit
    Cutting Diam 1/4 in
    Point Angle 135°
    Overall Length 2 1/2 in
    distributor United, Inc.
    Point Shape Split
    Applicable Materials Hard Steel, Stainless Steel, Titanium
    Flute Length 2 3/4 in
    Structure Solid
    Shank Type Cylinder
    packaging type Bulk
    Finish Gold Oxide
    Length Group Jobber
    Cutting Edge Material HSS-E (Co-M42)

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    Rated 3 out of 5�by 2 reviewers.
    Rated 1 out of 5�by cobalt drill bits Bought a new set of bits yesterday and I needed to drill6 holes through both 1/8" & 1/4" Angle iron bed frame material. The cobalt bits I bought failed miserably, could hardly get it done. Ended up having to step drill to get 6 - 1/4" holes through the material. I won't buy Irwin bits again!! April 1, 2015
    Rated 5 out of 5�by Mr. These cobalt drill bits are the only thing that will drill into hardened bolts and metals. I have tried standard bits on hardened metal before not knowing what grade the metal was. The standard bit dulls almost immediately so I reach for the cobalt bits. They will sink on through the metal with no problem. The only cons are they are more expensive and they will break easily if you put force perpendicular to the bit instead of linear. May 28, 2013
    • 2015-09-30T06:47:21.065-05:00
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