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Irwin 5/64" Left-Hand Mechanics Cobalt HSS Drill Bit

Irwin 30505
SKU IRW-30505
Irwin 5/64" Left-Hand Mechanics Cobalt HSS Drill Bit

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Perform tough metal drilling with this left hand cobalt drill bit. This tool is made for drilling into hardened steel bolts for creating pilot holes for screw extractors. It is made up of eight percent high speed cobalt steel for higher heat and abrasion resistance.

  • Cutting Diameter: 5/64 in.
  • Flute Length: 1 in.
  • Overall Length: 2 in.
  • Cutting Edge Material: HSS-E (Co-M42).
  • Finish: Gold Oxide.
  • No. of Flutes: 2.
  • Point Angle: 135 degree.
  • Point Shape: Split Point.
  • Shank Type: Cylinder.
  • Spiral Angle: CCW.
  • Structure: Solid.
  • Type: HSS Drill Bit.

Similar Drill Bit Products

Irwin 30505 Description

Perform tough metal drilling with this left hand cobalt drill bit. This tool is made for drilling into hardened steel bolts for creating pilot holes for screw extractors. It is made up of eight percent high speed cobalt steel for higher heat and abrasion resistance.

  • Cutting Diameter: 5/64 in.
  • Flute Length: 1 in.
  • Overall Length: 2 in.
  • Cutting Edge Material: HSS-E (Co-M42).
  • Finish: Gold Oxide.
  • No. of Flutes: 2.
  • Point Angle: 135 degree.
  • Point Shape: Split Point.
  • Shank Type: Cylinder.
  • Spiral Angle: CCW.
  • Structure: Solid.
  • Type: HSS Drill Bit.

Similar Drill Bit Products

$4.13Each
In Stock-

Ships between 02/23/2026 - 02/25/2026

Irwin
Visit The Irwin Store
See more Irwin Vise-Grip HSS Drill

Product Specifications

Part Number30505, 585-30505
Weight0.10-lb
UPC247213050533

Shop Top 100 Tools & Hardware Products.

View other Drill Bit Best Sellers.

Manufacturer Description

DRILL 5/64 ML LH COBALT

  • Tough metal drilling made for drilling into hardened steel bolts for creating pilot holes for screw extractors. 8% Cobalt alloyed for higher heat and abrasion resistance. Shorter drill for additional strength. Heavy-duty web construction for strength and du
  • Cutting Diam: 5/64 in
  • Finish: Gold Oxide
  • Type: HSS Drill Bit
  • Weight: 0.01 lb
Prop65
Important PROP 65 InformationWarning: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov. to CA residents.
Irwin 5/64" Left-Hand Mechanics Cobalt HSS Drill Bit
$4.13Each
In Stock-

Ships between 02/23/2026 - 02/25/2026

Similar Drill Bit Products

Irwin 30505 Description

Perform tough metal drilling with this left hand cobalt drill bit. This tool is made for drilling into hardened steel bolts for creating pilot holes for screw extractors. It is made up of eight percent high speed cobalt steel for higher heat and abrasion resistance.

  • Cutting Diameter: 5/64 in.
  • Flute Length: 1 in.
  • Overall Length: 2 in.
  • Cutting Edge Material: HSS-E (Co-M42).
  • Finish: Gold Oxide.
  • No. of Flutes: 2.
  • Point Angle: 135 degree.
  • Point Shape: Split Point.
  • Shank Type: Cylinder.
  • Spiral Angle: CCW.
  • Structure: Solid.
  • Type: HSS Drill Bit.

Product Specifications

Irwin
Visit The Irwin Store
Part Number30505, 585-30505
Weight0.10-lb
UPC247213050533

Shop Top 100 Tools & Hardware Products.

View other Drill Bit Best Sellers.

Manufacturer Description

DRILL 5/64 ML LH COBALT

  • Tough metal drilling made for drilling into hardened steel bolts for creating pilot holes for screw extractors. 8% Cobalt alloyed for higher heat and abrasion resistance. Shorter drill for additional strength. Heavy-duty web construction for strength and du
  • Cutting Diam: 5/64 in
  • Finish: Gold Oxide
  • Type: HSS Drill Bit
  • Weight: 0.01 lb
Prop65
Important PROP 65 InformationWarning: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov. to CA residents.

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