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Triumph  |  SKU: 057521

21/64" 135° HD Black Oxide Aircraft Drills

Sale price $16.35 Regular price $40.88
Flat $15 shipping · free over $200

Sold in 6s · $98.10 for 6 Bits

$16.35 Qty 6

21/64" 135° Black HD 6" Aircraft Drills (6 pack)

Triumph Twist Drill

About This Item:

Upgrade your drilling game with the Triumph Twist Drill 21/64" 135° Black HD 6" Aircraft Drills. These premium grade high-speed steel drills feature a 135° split point for precision drilling. The black oxide coating ensures durability, while the heavy-duty construction guarantees long-lasting performance.

    Specifications:

  • Part Number: 57521
  • Size: 21/64"
  • Decimal Equivalent: .3281
  • Flute Length: 3-5/16"
  • Overall Length: 6"

    Features:

  • Point: 135° Split Point
  • Material: Premium Grade High Speed Steel
  • Coating/Finish: Black Oxide
  • Other: Heavy-Duty Construction

    For use in:

  • Iron, Cast
  • Steel, Low and Medium Carbon
  • Steel, High Alloy
  • Steel, Stainless and PH
  • Tough, Medium and High-Tensile Strength Alloys

About this Manufacturer:

For over 60 years, Triumph Twist Drill has been a trusted name in the industry. Operating from a state-of-the-art 70,000 square foot facility in Chisholm, MN, Triumph Twist Drill produces top-quality tools using cutting-edge machinery and equipment. Count on us

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Call 833-438-6657, 8 AM to 4 PM MST. We know the parts, not just the part numbers.