Cobalt Jobber Drill Bits - Fractional

Premium M35 Cobalt Jobber Drill Bits Tackle the toughest drilling jobs with premium M35 cobalt drill bits designed for industrial, professional, and heavy-duty applications. Manufactured with 5% cobalt (M35 HSS-Co) for superior heat resistance and extended tool life, these high-performance drill bits cut through stainless steel, hardened steel, cast iron, titanium alloys, alloy steel, tool steel, and other difficult-to-machine metals with exceptional speed and precision. Featuring a 135° split point tip, these cobalt drill bits start accurately without walking, reducing the need for a pilot hole while delivering faster penetration and cleaner holes. The gold oxide finish minimizes friction, improves wear resistance, and enhances chip evacuation for longer-lasting performance in demanding production environments. Available in a complete fractional size range from 1/64" through 1/2", these jobber-length drill bits are engineered to ANSI standards for compatibility with virtually all hand drills, drill presses, CNC machines, and machining centers. Whether you're a machinist, fabricator, maintenance technician, contractor, or industrial MRO professional, these cobalt bits deliver the durability and precision required for everyday production work. Smaller fractional sizes (1/64"–5/16") are conveniently packaged in 12-packs, while larger sizes (21/64"–1/2") are supplied in 6-packs, making inventory management simple for maintenance departments, fabrication shops, and industrial supply programs. Why Choose Our M35 Cobalt Drill Bits? Premium M35 High-Speed Steel with 5% Cobalt for maximum durability Drills stainless steel, hardened steel, titanium, cast iron, alloy steel, and other hard metals 135° split point reduces walking and eliminates most pilot holes Gold oxide finish lowers friction and extends cutting life Standard jobber length fits virtually all drill presses and portable drills Up to 30% faster drilling performance than conventional M2 HSS drill bits Manufactured to ANSI specifications for professional accuracy and consistency Whether you're stocking an industrial maintenance department, machine shop, fabrication facility, automotive repair shop, or construction fleet, these professional-grade cobalt drill bits provide the strength, precision, and long service life needed to maximize productivity while reducing tool replacement costs.