Best 1/8 Drill Bits for Hardened Steel

This category page features 1/8" and fractional drill bits engineered for hardened steel and tough metal applications. Options include M35 cobalt step point and jobber bits with 135-degree split points, plus black & gold oxide coated HSS bits, all designed for durability, heat resistance, and precise starts in industrial metalworking.

Cobalt Step Point Drill Bits - Fractional
Cobalt Jobber Drill Bits - Fractional
Black & Gold Jobber Drill Bits - Fractional

Our Range of Products
Cobalt Step Point Drill Bits - Fractional

Cobalt Step Point Drill Bits - Fractional

  • M35 Cobalt construction for extended tool life
  • Step point drills multiple hole sizes in one pass
  • Fractional sizes 1/8" to 1/2" for versatility
Cobalt Jobber Drill Bits - Fractional

Cobalt Jobber Drill Bits - Fractional

  • M35 Cobalt built for hardened steel durability
  • 135° split point reduces walking, precise starts
  • Jobber length ideal for general-purpose drilling
Black & Gold Jobber Drill Bits - Fractional

Black & Gold Jobber Drill Bits - Fractional

  • Black & Gold oxide coating resists heat buildup
  • Jobber length works across multiple materials
  • Fractional sizing for standard drilling tasks

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Black & Gold Jobber Drill Bits - Fractional | 1/4 Cobalt Drill Bits for Hardened and Stainless Steel

1/4 Cobalt Drill Bits for Hardened and Stainless Steel

This category features 1/4-inch cobalt drill bits engineered for drilling hardened and stainless steel. Made from M35 cobalt with jobber, step point, and split point designs, these bits resist heat, reduce walking, and deliver long-lasting performance for metalworking, fabrication, and industrial maintenance applications across machine shops and manufacturing facilities.
Cobalt Jobber Drill Bits - Fractional | 3/4 Drill Bits for Hardened Steel

3/4 Drill Bits for Hardened Steel

Our 3/4-inch drill bits for hardened steel include M35 cobalt jobber bits and black & gold coated options, engineered with 135-degree split points for precise, heat-resistant drilling. Ideal for stainless steel, hardened metals, and general industrial fabrication, these fractional-size bits deliver durability and accuracy across machine shop and manufacturing applications.
Cobalt Jobber Drill Bits - Fractional | 3/8" Cobalt Twist Drill Bits for Hard Metal

3/8" Cobalt Twist Drill Bits for Hard Metal

Explore our selection of 3/8" Cobalt Twist Drill Bits, engineered from high-grade M35 cobalt for superior heat resistance and durability. These bits are specifically designed for drilling into hard metals like stainless steel, cast iron, and other tough alloys, making them ideal for demanding metalworking, fabrication, and industrial manufacturing applications.

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