Precision Twist Drill 5998348 Jobber Drill Bit 27 Hss

Product Description

The PRECISION TWIST DRILL 5998348 is a jobber-length drill bit designed for general-purpose drilling in a wide range of materials. Manufactured from high speed steel (HSS) with a steam oxide coating, this bit carries a wire gauge size of 27, equal to 0.1440 inches in diameter, and features a standard 118-degree split point angle. The overall length is 3 inches with a 1-7/8-inch flute length, making it well suited for everyday production and maintenance drilling tasks. A right-hand spiral flute with a regular helix and tapered web configuration promotes efficient chip evacuation. The straight-cylindrical shank seats securely in standard drill chucks.

This bit is intended for drilling into steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. It fits typical jobsite and shop applications across mechanical, HVAC, plumbing, and electrical trades where small-diameter hole-making in metal is required. With a maximum drilling depth of 1-7/8 inches and a flute-to-diameter ratio of 13xD, it handles standard through-hole and moderate-depth drilling in both production and field-service settings. It is sold individually (package quantity of 1).

Key Features

• Wire gauge size 27 (0.1440 inches) straight-cylindrical shank for secure chuck engagement
• 118-degree standard point angle with web-thinned, tapered web for easier penetration
• High speed steel construction with steam oxide coating for corrosion resistance and reduced friction
• Right-hand cut, 2-flute regular spiral design promotes chip clearance during drilling
• 1-7/8-inch flute length supports drilling to full maximum depth of 1-7/8 inches
• Meets ANSI standards; suitable for Series R10, R15, and R18 applications

Compatibility

Designed as a general-purpose jobber-length replacement bit compatible with Series R10, R15, and R18 applications per ANSI specification, suitable for use with any standard drill chuck accepting a 0.1440-inch straight-cylindrical shank.

Installation Notes

Installation is performed by machinists, maintenance technicians, and trade professionals using any standard keyed or keyless drill chuck rated for the shank diameter. Ensure the drill press, hand drill, or driver is powered off and unplugged before changing bits. Secure the shank fully into the chuck jaws and tighten before operation. Do not exceed the recommended drilling depth of 1-7/8 inches, and use appropriate cutting fluid when drilling hard or stainless steel to extend bit life.