Precision Twist Drill 5998913 Taper Length Drill Bit 5/32

Product Description

The PRECISION TWIST DRILL 5998913 is a taper length drill bit designed for precision hole-making in non-ferrous metals and light alloys. Manufactured from high speed steel (HSS) with a bright/uncoated finish, it features a 118-degree standard point angle and a spiral flute geometry suited for fast chip evacuation. The 5/32-inch (0.1562-inch) diameter and 3-inch flute length give it the reach needed for deeper hole applications where a jobber-length bit falls short. A web-thinned, tapered web configuration reduces cutting thrust and helps the bit start cleanly without walking. This bit is sized for use in standard drill chucks and CNC drilling stations alike.

This taper length drill bit is built for drilling aluminum, aluminum alloy, copper, magnesium, and magnesium alloy. The fast spiral flute type promotes efficient chip clearance in these gummy, stringy materials where chip packing is a common failure point. Typical install scenarios include sheet metal fabrication shops, HVAC equipment assembly, plumbing rough-in work involving copper fittings, and general mechanical contracting where non-ferrous material drilling is routine. The right-hand cut and cylindrical shank make it compatible with standard drill presses, hand drills, and CNC spindles without adapters.

Key Features

• High speed steel construction for durability in non-ferrous and light alloy drilling
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• 3-inch spiral flute length provides extended reach beyond jobber-length bits
• Fast spiral flute type enhances chip evacuation in aluminum, copper, and magnesium
• Bright/uncoated finish suited for general purpose use without coating-related heat retention concerns
• Cylindrical shank fits standard drill chucks without adapters; no threaded shank complications

Compatibility

Rated for use in aluminum, aluminum alloy, copper, magnesium, and magnesium alloy per Series R51FS specifications. Meets ANSI standards. Designed as a general-purpose taper length replacement for 5/32-inch HSS drill bits in this series.

Installation Notes

This bit is installed and operated by machinists, fabricators, and trade professionals using standard drill presses, hand drills, or CNC equipment. Secure the cylindrical shank firmly in the chuck before operation and verify concentricity to prevent premature bit wear or wandering. Always power down and de-energize any drill press or CNC spindle before changing bits. Use appropriate cutting fluid or lubricant for copper and aluminum to extend bit life and improve hole quality.