29/64 Drill Bits

A number 29 drill bit measures 0.1360 inches (3.454 mm), making it closest to a 9/64" fractional bit (0.1406 in.) or a 3.5mm metric bit. It's commonly used for tapping 8-32 and 10-24 threaded holes in metalworking applications.

Cobalt drill bits (M35 alloy) offer superior heat resistance and hold their edge longer when drilling hard metals like stainless steel, making them ideal for demanding industrial use. Black & gold oxide-coated bits are more economical, general-purpose bits suited for softer metals, wood, and plastic.

Step point drill bits feature a stepped tip design that allows a single bit to drill multiple hole diameters, reducing tool changes. Our cobalt step point bits range from 1/8" to 1/2", making them efficient for metalworking, fabrication, and maintenance tasks requiring varied hole sizes.

A 135-degree split point reduces bit walking on contact, allowing for more accurate starts without center punching. This design also reduces the thrust needed to begin a hole, extending bit life and improving precision when drilling hard metals like stainless steel.

Yes. While cobalt bits are optimized for hard metals like stainless steel, our black & gold jobber bits are versatile enough for general-purpose drilling in wood, plastic, and softer metals, making them a practical choice for mixed-material workshops.

Yes, Buster's Industrial Supply offers volume and custom pricing on select drill bits, including options available through our GSA MAS Contract. Contact our team directly for bulk quotes tailored to your shop's ongoing supply needs.