Precision Twist Drill 5997700 Cobalt Jobber Drill No. 17

Product Description

The PRECISION TWIST DRILL 5997700 is a cobalt high-speed steel jobber-length drill bit sized at No. 17 wire gauge (0.1730 inches decimal). It features a 135-degree split point with web thinning for faster penetration and reduced walking on entry. The straw oxide finish provides light lubricity and heat resistance during drilling operations. With an overall length of 3.375 inches and a flute length of 2.1875 inches, this bit is sized for standard jobber-length applications. It is intended for use by machinists, maintenance technicians, and trade professionals drilling into steel and other ferrous and non-ferrous materials.

This drill bit is suited for general-purpose production and maintenance drilling in steel, cast iron, aluminum, non-ferrous metals, and certain plastics and composites, as indicated by workpiece material codes P, M, K, N, and S. The straight shank fits standard three-jaw drill chucks found on handheld drills, drill presses, and CNC machining centers. The regular spiral flute geometry evacuates chips efficiently in through-hole and moderate-depth drilling applications. Maximum recommended drilling depth matches the flute length at 2.1875 inches. The series designation R10CO-R15CO-R18CO places this bit in Precision Twist Drill's heavy-duty cobalt jobber line.

Key Features

• Cobalt high-speed steel construction for improved heat and wear resistance in steel drilling
• 135-degree split point with web thinning reduces thrust and minimizes bit walking on entry
• Straw oxide finish provides light lubrication and corrosion resistance during use
• Regular spiral flute geometry promotes consistent chip evacuation
• Straight cylindrical shank fits standard drill chucks without adapters
• Meets ANSI and NAS 907 standards for heavy-duty jobber drill geometry

Compatibility

Designed for use in standard three-jaw drill chucks accepting a 0.1730-inch straight shank. Compatible with handheld drills, drill presses, and CNC machining centers. Suitable for workpiece material codes P, M, K, N, and S per the supplier specification, covering steel, cast iron, aluminum, non-ferrous metals, and composites. Part of the Precision Twist Drill Series R10CO-R15CO-R18CO cobalt jobber line.

Installation Notes

Machinists and maintenance technicians install this bit into a standard drill chuck; ensure the shank is fully seated and the chuck is tightened securely before operation. Apply cutting fluid when drilling steel to extend bit life and improve hole finish. Do not exceed the maximum drilling depth of 2.1875 inches in a single pass without retracting to clear chips. Follow applicable shop safety standards and wear appropriate eye protection during all drilling operations.