Precision Twist Drill 5999654 Taper Length Drill Bit

Product Description

The PRECISION TWIST DRILL 5999654 is a taper length high speed steel drill bit designed for accurate through-hole drilling across a wide range of materials. Built to ANSI standards, this 1/16 inch diameter bit features a 118-degree standard point angle and a web-thinned, tapered web configuration that reduces thrust and improves centering at the start of a cut. The bright/uncoated finish suits general-purpose applications where coating is not required. It is sold individually and is intended for use in drill presses, CNC machines, and hand-held power drills in shop and field environments.

This bit is suited for metalworking, fabrication, and maintenance applications in both residential and light commercial settings. The 3 inch overall length and 1-3/4 inch flute length provide adequate reach for deeper holes compared to a jobber-length bit of the same diameter. Right-hand spiral flutes clear chips efficiently during drilling. The Series R51 taper length configuration is a common choice for machinists, pipefitters, electricians, and general maintenance technicians who need consistent performance on small-diameter holes.

Key Features

• 1/16 inch (0.0625 inch) diameter with straight shank of matching diameter
• 118-degree standard point angle with web-thinned tapered web for reduced entry thrust
• 1-3/4 inch flute length providing a 6xD flute-to-diameter ratio for deeper reach
• High speed steel construction for general-purpose durability across multiple material types
• Bright/uncoated finish; right-hand cut with regular spiral flutes for efficient chip evacuation
• Meets ANSI standards; Series R51 taper length design

Compatibility

Rated for use on alloy steel, aluminum, aluminum alloy, brass, bronze, carbon steel, cast iron, cermet, copper, graphite, hardened steel, high strength bronze, magnesium, magnesium alloy, malleable iron, nickel, nickel alloy, reinforced plastic materials, and stainless steel. Fits any standard drill chuck that accepts a 1/16 inch straight shank.

Installation Notes

Install and remove this bit with the drill or machine fully powered off and the chuck key removed from the work area. Secure the workpiece firmly before drilling to prevent walking on small-diameter entry. Use cutting fluid when drilling hardened or stainless steel to extend bit life and reduce heat buildup. Do not exceed the rated speed range for the material being drilled.