Precision Twist Drill 5998819 Letter K Drill Bit 9/32

Product Description

The PRECISION TWIST DRILL 5998819 is a jobber-length drill bit sized at letter K, equivalent to 9/32 inch (0.2810 inch decimal). It is made from high speed steel with a steam oxide coating to reduce friction and improve chip evacuation during drilling. The bit features a 118-degree standard point angle, a regular spiral flute, and a straight-cylindrical shank. Overall length is 4.25 inches with a flute length of 2.9375 inches. The web is thinned and tapered for easier penetration at the point. This bit is suited for general-purpose drilling in metal fabrication, maintenance, and production environments. Licensed tradespeople and machinists are the primary users.

This drill bit is designed for drilling operations in steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It fits standard drill chucks accepting a 9/32-inch straight-cylindrical shank. The 10xD flute-to-diameter ratio provides good chip clearance in moderate-depth holes. It is appropriate for bench drill presses, hand drills, and CNC drilling applications where a general-purpose jobber-length bit is specified. The Series R10-R15-R18 designation places it within a well-established line of HSS jobber bits conforming to ANSI standards.

Key Features

• Letter K size: 9/32 inch (0.2810 inch decimal) diameter
• High speed steel construction with steam oxide coating for reduced friction
• 118-degree standard point angle with web-thinned, tapered web for easier entry
• Regular spiral flute, 2.9375-inch flute length, right-hand cut
• Straight-cylindrical shank, 0.2810-inch shank diameter, 1.3125-inch shank length
• Conforms to ANSI standards; Series R10-R15-R18

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard drill chuck accepting a 9/32-inch straight-cylindrical shank. Suitable for use in steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium workpieces per primary workpiece material codes P, M, K, N, and S.

Installation Notes

Installation is performed by machinists, maintenance technicians, or qualified tradespeople. Secure the shank fully in the drill chuck and verify the bit is centered and locked before operation. Power down and de-energize all equipment before changing bits. Follow applicable shop safety standards and wear appropriate eye protection when drilling metal workpieces.