39/64″ Reduced Shank Drill Bit HSS Black & Gold Reduced 3/8″ 3-Flat Shank KFDRSD3/8X39/64 Don’t Miss Out

Specs

Diameter: 39/64″ (0.609375″) cutting portion

Shank: Reduced 3/8″ with 3-flat drive

Material: HSS (High-Speed Steel)

Coating: Black & Gold finish

Quantity: 1 piece

Features

3-flat shank design improves grip and torque transfer in standard chucks, reducing cam-out during heavy cuts.

Black & Gold coating delivers lower friction and increased wear resistance for repeated metal drilling.

HSS core provides reliable performance when drilling through metals such as mild steel, cast iron, and certain aluminum alloys.

Large-diameter cutting portion (39/64″) with a reduced 3/8″ shank increases versatility for tasks that require a larger hole while using a common shank size.

Ideal for metalworking projects requiring precise 39/64″ holes; apply appropriate feeds and speeds for HSS drilling in metal.

Use cases include fabrication, automotive maintenance, and shop tasks where a robust, single-piece drill bit is preferred.

Physical

Bit diameter (cutting portion): 39/64″

Shank diameter: 3/8″ (reduced) with 3-flat surfaces

Finish: Black & Gold coating

Weight: Not specified

Length: Not specified