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Irwin 1/2" High Speed Steel Unibit Fractional Step Drill

Irwin 10310
SKU IRW-10310
Irwin 1/2" High Speed Steel Unibit Fractional Step Drill

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Drill holes in thin materials with this fractional step drill. This drill can be used upon materials such as mild steel, copper, brass, aluminum, plexiglass, wood, and laminates. Its single-fluted cutting edge assures true round holes, and allows greater control with less vibration.

  • Cutting Diameter: 1/2 in [Max].
  • Cutting Edge Material: HSS.
  • Material Thickness: N/A [Max].
  • Measurement Type: Fractional.
  • No. of Steps: N/A.
  • Packing Type: Carded.
  • Shank Diameter: 1/4 in.

Similar Drill Bit Products

Irwin 10310 Description

Drill holes in thin materials with this fractional step drill. This drill can be used upon materials such as mild steel, copper, brass, aluminum, plexiglass, wood, and laminates. Its single-fluted cutting edge assures true round holes, and allows greater control with less vibration.

  • Cutting Diameter: 1/2 in [Max].
  • Cutting Edge Material: HSS.
  • Material Thickness: N/A [Max].
  • Measurement Type: Fractional.
  • No. of Steps: N/A.
  • Packing Type: Carded.
  • Shank Diameter: 1/4 in.

Similar Drill Bit Products

$32.53Each
In Stock-

Ships between 02/26/2026 - 03/02/2026

Irwin
Visit The Irwin Store
See more Irwin Vise-Grip Step Drills

Product Specifications

Part Number10310, 585-10310
Weight0.08-lb
UPC038548103105

Shop Top 100 Tools & Hardware Products.

View other Drill Bit Best Sellers.

Manufacturer Description

1/2" Unibit Stepdrill

  • New SpeedPoint tip provides 6X faster initial penetration time than before and eliminates the need for center punching. Single-fluted cutting edge assures true round holes and allows greater control with less vibration. Ideal for drilling holes in thin m
  • Cutting Diam: 1/2 in Max
  • Packing Type: Carded
  • Weight: 0.16 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 1/2" High Speed Steel Unibit Fractional Step Drill
$32.53Each
In Stock-

Ships between 02/26/2026 - 03/02/2026

Similar Drill Bit Products

Irwin 10310 Description

Drill holes in thin materials with this fractional step drill. This drill can be used upon materials such as mild steel, copper, brass, aluminum, plexiglass, wood, and laminates. Its single-fluted cutting edge assures true round holes, and allows greater control with less vibration.

  • Cutting Diameter: 1/2 in [Max].
  • Cutting Edge Material: HSS.
  • Material Thickness: N/A [Max].
  • Measurement Type: Fractional.
  • No. of Steps: N/A.
  • Packing Type: Carded.
  • Shank Diameter: 1/4 in.

Product Specifications

Irwin
Visit The Irwin Store
Part Number10310, 585-10310
Weight0.08-lb
UPC038548103105

Shop Top 100 Tools & Hardware Products.

View other Drill Bit Best Sellers.

Manufacturer Description

1/2" Unibit Stepdrill

  • New SpeedPoint tip provides 6X faster initial penetration time than before and eliminates the need for center punching. Single-fluted cutting edge assures true round holes and allows greater control with less vibration. Ideal for drilling holes in thin m
  • Cutting Diam: 1/2 in Max
  • Packing Type: Carded
  • Weight: 0.16 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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