Precision Twist Drill 5995923 No. 50 Hss Jobber Drill

Product Description

The PRECISION TWIST DRILL 5995923 is a No. 50 wire-size jobber-length drill bit designed for general-purpose drilling in demanding materials. It is manufactured from high-speed steel (HSS) with a straw bronze coating and features a 135-degree split point that self-centers on contact, reducing the need for a center punch. At 0.0700 inches in diameter and 2 inches overall length, this bit is suited for small-hole work in ferrous metals, high-temp alloys, and similar hard materials. Two regular spiral flutes clear chips efficiently throughout the 1-inch maximum drilling depth.

This drill bit is built for production and maintenance applications where tight-tolerance small-diameter holes are required. It fits standard drill chucks used in drill presses, CNC drilling centers, and hand-held power drills. Primary workpiece materials include high-temperature alloys and other materials coded to ISO material groups P, M, K, and S, making it relevant for aerospace, tool-and-die, and precision machining environments. The straight cylindrical shank diameter matches the drill diameter at 0.0700 inches, allowing direct chuck clamping without adapters.

Key Features

• No. 50 wire size, 0.0700 inches diameter for precision small-hole drilling
• 135-degree split point self-centers and reduces thrust force at entry
• High-speed steel construction with straw bronze coating for improved wear resistance
• Web-thinned, tapered web design reduces cutting resistance
• Regular spiral flutes with 14xD flute-to-diameter ratio for efficient chip evacuation
• Right-hand cutting direction, ANSI standard, heavy-duty grade

Compatibility

Part of the Series HX10-HX15-HX18 line. Designed for use with standard straight-shank drill chucks in drill presses, CNC machines, and handheld power tools. Rated for drilling high-temperature alloys and materials within ISO material groups P, M, K, and S.

Installation Notes

Installation and use should be performed by machinists or qualified tradespeople familiar with small-diameter drill bit handling. Secure the workpiece firmly before drilling to prevent bit deflection or breakage at this diameter. Ensure the drill chuck is clean and properly tightened on the straight shank before operation. Use appropriate cutting fluid or coolant for the workpiece material to extend bit life and maintain hole quality.