Precision Twist Drill 5997632 Jobber Drill Bit 15/32

Product Description

The PRECISION TWIST DRILL 5997632 is a jobber-length drill bit designed for general-purpose drilling in a wide range of materials. Built from high-speed steel with a steam oxide coating, it resists heat and wear during extended use. The bit measures 15/32 inch (0.4688 inch decimal) in diameter with a 135-degree split-point angle that reduces walking on contact and lowers required thrust force. Overall length is 5.75 inches, and the flute length runs 4.3125 inches, giving it solid reach for most production and maintenance drilling tasks. Licensed tradespeople and industrial users working in metal fabrication, maintenance, and repair will find this bit suited to their daily workflow.

This drill bit is intended for drilling into steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. It performs well in both handheld and drill-press setups across maintenance, repair, and production environments. The straight-cylindrical shank fits standard three-jaw drill chucks without adapters. The 9xD flute-to-diameter ratio supports chip evacuation in deeper holes up to 4.3125 inches maximum drilling depth.

Key Features

• 135-degree split-point angle reduces bit walking and cutting thrust
• Steam oxide coating improves lubricity and extends service life in ferrous materials
• Web-thinned, tapered web construction for improved chip flow and reduced heat buildup
• Right-hand spiral flute with regular helix for consistent chip evacuation
• Straight-cylindrical shank fits standard drill chucks without a sleeve or adapter
• Meets ANSI standards and NAS 907 specification for heavy-duty jobber-length bits

Compatibility

Part of the Series R10B-R15B-R18B family. Designed for use across primary workpiece material codes P, M, K, N, and S, covering steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. Fits any standard drill chuck accepting a 15/32 inch straight-cylindrical shank.

Installation Notes

This bit is installed by machinists, maintenance technicians, and trade professionals using standard drill presses, magnetic drills, or handheld electric drills. Secure the shank fully in the chuck before operation and verify chuck key is removed before starting the spindle. Use appropriate cutting fluid or coolant when drilling steel or stainless steel to manage heat and extend bit life. Inspect the cutting edges for wear before each use and replace if the point shows chipping or rounding.