ST
CHICAGO-LATROBE

Jobber Length Drill Bit, Drill Bit Size 1/4", Drill Bit Point Angle 135°, Cobalt, Straw/Bronze

  • Item # 1G881
  • My Part #
  • Mfr. Model # 46616
  • Catalog Page # 2243
  • UNSPSC # 23171609
Jobber Length Drill Bit,  Drill Bit Size 1/4",  Drill Bit Point Angle 135°,  Cobalt,  Straw/Bronze close
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Primary Category:
~Machining~Drilling and Holemaking~Jobber Length Drill Bits

$5.15 / each
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  • Shipping Weight 0.03 lbs.
Country of Origin USA Country of Origin is subject to change.
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Product Details

These drill bits meet National Aerospace Specification (NAS) 907 Type J for drill bits used in aircraft repair and production. They have a have a straw/bronze finish that improves their wear resistance, and they have spiral flutes that evacuate chips as the bits drill into a workpiece.

Cobalt jobber-length drill bits tolerate higher drilling speeds and are harder and more wear-resistant than high-speed steel drill bits. They provide some shock absorption and can be used in handheld power tools. Jobber-length drill bits are the most commonly used drill-bit length. They provide a good balance of strength and accuracy when drilling into a variety of materials.

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Technical Specs

  • Item Jobber Length Drill Bit
  • Drill Bit Size 1/4"
  • Decimal Equivalent 0.25
  • Measurement System Fractional Inch
  • Material - Machining Cobalt
  • Finish - Machining Straw/Bronze
  • Drill Bit Point Angle 135 Degrees
  • Drill Bit Point Type Split Point
  • Coolant Fed Non-Coolant Through
  • Flute Type Spiral
  • Number of Flutes 2
  • Flute Length 2-3/4"
  • Maximum Drilling Depth 1"
  • Helix Angle 28 Degrees
  • Cutting Direction Right Hand
  • Spiral Direction Right Hand
  • Shank Type - Machining Straight
  • Shank Dia. 1/4"
  • Shank Length 1-1/4"
  • Overall Length 4"
  • Depth:Dia. Ratio 4xD
  • Drill Length Class Jobber Length
  • Drill Point Length 0.0518"
  • Drill Bit Grouping Individual
  • Series 550
  • Standards NAS 907 Type J
  • Aircraft Drill Yes
  • Drill Diameter Tolerance +0"/-0.0007"
  • Material Grade - Machining M42
  • Primary Material Application Stainless Steel, Steel, Titanium
  • Primary Material Application ISO Code M, P, S
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