Precision Twist Drill 5999163 Jobber Drill Bit Size 27

Product Description

The PRECISION TWIST DRILL 5999163 is a jobber-length drill bit sized at wire gauge 27 (0.1440 inches decimal), designed for general-purpose drilling in metal and hard materials. Built from high speed steel with a bright uncoated finish, this bit features a 118-degree standard point angle and a regular spiral flute with web thinning for improved chip clearance. The straight-cylindrical shank measures 0.1440 inches in diameter and seats securely in standard drill chucks. With an overall length of 3 inches and a flute length of 1.875 inches, this bit suits production drilling and maintenance applications handled by machinists, tool-room techs, and maintenance professionals.

This bit is suited for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. Its 13xD flute-to-diameter ratio supports controlled chip evacuation across a range of workpiece materials. Typical applications include through-hole and blind-hole drilling in fabrication shops, machine shops, and field maintenance environments. The Series R18P designation places it within PRECISION TWIST DRILL Series R10P-R15P-R18P, a general-purpose jobber line built to ANSI standards.

Key Features

• Wire size 27 diameter — 0.1440 inches decimal equivalent
• 118-degree standard point angle for general-purpose metal drilling
• Web-thinned, tapered web configuration for reduced thrust and improved chip flow
• High speed steel construction handles steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium
• Right-hand cut spiral flute, 2-flute design, 1.875 inches flute length
• Built to ANSI standards, Series R10P-R15P-R18P

Compatibility

Designed as an OEM-style general-purpose jobber-length drill bit compatible with any standard drill chuck accepting a 0.1440-inch straight-cylindrical shank. Suitable for use across steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium workpieces per ANSI specification.

Installation Notes

Install and remove drill bits only with the drill fully powered down and the chuck key removed. Secure the straight-cylindrical shank firmly in the chuck before operation to prevent slippage and runout. Use appropriate cutting fluid or coolant for extended drilling in hard materials such as stainless steel or superalloys, even though this bit does not feature internal coolant-through capability. Observe applicable shop safety standards and machine guarding requirements during operation.