HomElectrical.com Lighting & Electrical Supply Superstore

Irwin 3/8" High Speed Steel Unibit Fractional Step Drill

Irwin 10312
SKU IRW-10312
Irwin 3/8" High Speed Steel Unibit Fractional Step Drill

Image may not depict product actual color, inclusions or accessories

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: 3/4 in.
  • Cutting Edge Material: HSS.
  • Measurement Type: Fractional.
  • Packing Type: Carded.
  • Shank Diameter: 1/4 in.

Similar Drill Bit Products

Irwin 10312 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: 3/4 in.
  • Cutting Edge Material: HSS.
  • Measurement Type: Fractional.
  • Packing Type: Carded.
  • Shank Diameter: 1/4 in.

Similar Drill Bit Products

$18.49Each
In Stock-

Ships between 03/18/2026 - 03/20/2026

ReturnThis item is non-returnable
Country of Origin

Made in the U.S.A.
This item is proudly made in the United States of America.

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

Product Specifications

Part Number10312, 585-10312
Country of OriginUSA
Weight0.06-lb
UPC038548103129

Shop Top 100 Tools & Hardware Products.

View other Drill Bit Best Sellers.

Manufacturer Description

10312 3/8" HOLE UNIBIT S

  • 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: 3/4 in
  • Packing Type: Carded
  • Weight: 0.15 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 3/8" High Speed Steel Unibit Fractional Step Drill
$18.49Each
In Stock-

Ships between 03/18/2026 - 03/20/2026

ReturnThis item is non-returnable
Country of Origin

Made in the U.S.A.
This item is proudly made in the United States of America.

Similar Drill Bit Products

Irwin 10312 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: 3/4 in.
  • Cutting Edge Material: HSS.
  • Measurement Type: Fractional.
  • Packing Type: Carded.
  • Shank Diameter: 1/4 in.

Product Specifications

Irwin
Visit The Irwin Store
Part Number10312, 585-10312
Country of OriginUSA
Weight0.06-lb
UPC038548103129

Shop Top 100 Tools & Hardware Products.

View other Drill Bit Best Sellers.

Manufacturer Description

10312 3/8" HOLE UNIBIT S

  • 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: 3/4 in
  • Packing Type: Carded
  • Weight: 0.15 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.

Product Questions & Answers

Customer Reviews

Your voice matters. Be the first to leave a review and help other pros shop smarter

Write A Review
Need Assistance?

Never Stop Saving!

With HomElectrical, you are not just buying a product, you are investing in a solution. Our goal is to help you make the most educated choice possible, ensuring maximum savings on every job. We provide the deep product knowledge for all your Electrical, HVAC, and Lighting projects. By promoting efficiency and supporting every purchase with high-quality service, we help save your business money and support a greener future.