Precision Twist Drill 5998037 7/64 Inch Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 5998037 is a 7/64 inch (0.1094 inches) diameter jobber length drill bit designed for general-purpose drilling in metal and hard materials. Built from high speed steel with a steam oxide coating, it features a 135-degree split point and a web-thinned, tapered web configuration that reduces thrust and improves center starting on hard surfaces. The right-hand spiral flute design pulls chips up and out of the hole during operation. Overall length is 2.625 inches with a 1.5-inch flute length, making it a standard jobber proportion suited to hand-held drills, drill presses, and CNC setups. This bit ships individually and meets ANSI and NAS 907 standards.

This drill bit is rated for use in steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It carries ISO material group codes P, M, K, N, and S, covering the broadest range of workpiece materials a machinist or maintenance tech is likely to encounter. The 14xD flute-to-diameter ratio delivers adequate chip clearance for typical through-hole and blind-hole work at this diameter. Machinists, millwrights, pipefitters, and maintenance technicians in industrial and commercial settings are the primary users.

Key Features

• 7/64 inch (0.1094 inches) diameter straight-cylindrical shank for standard chuck compatibility
• 135-degree split point with web thinning for reduced thrust and accurate starting
• Steam oxide coating helps reduce friction and provides light corrosion resistance during storage
• Regular spiral, 2-flute design optimized for general-purpose metal drilling
• Rated for steel, stainless steel, cast iron, non-ferrous metal, superalloys, and titanium
• Meets ANSI and NAS 907 standards; Series R10B-R15B-R18B

Compatibility

Designed as a general-purpose jobber length drill bit compatible with any standard 3-jaw or keyless drill chuck that accepts a 7/64 inch straight-cylindrical shank, including hand drills, drill presses, and CNC spindles.

Installation Notes

Secure the shank fully in the chuck and verify runout before drilling, particularly in drill press or CNC applications. Always wear appropriate eye protection and secure the workpiece to prevent rotation. When drilling stainless steel or superalloys, use cutting fluid to manage heat and extend tool life. Inspect the cutting edges before each use and replace the bit if chipping or dulling is observed, as a degraded point increases thrust and can cause workpiece damage.