Cleveland C72031 31/64 Inch Hss Jobber Drill Bit

Product Description

The CLEVELAND C72031 is a jobber-length twist drill bit sized at 31/64 inch (0.4844 inch decimal) designed for general-purpose drilling in metal, wood, and plastics. Manufactured from high speed steel with a bright, uncoated finish, it features a 118-degree standard point angle and a two-flute spiral design with web thinning for improved penetration and chip evacuation. The straight-cylindrical shank measures 1.5 inches in length and 0.4844 inch in diameter, with an overall length of 5-7/8 inches. This bit is intended for use in drill presses, lathes, and handheld power drills by machinists, pipefitters, plumbers, electricians, and general tradespeople.

The C72031 is built for general-purpose production and maintenance drilling applications across industrial, commercial, and trade environments. Its regular spiral flute geometry and tapered web configuration make it well-suited for through-hole and blind-hole work in mild steel, aluminum, and similar materials. The 4xD flute-to-diameter ratio supports adequate chip clearance during moderate-depth cuts. This bit is sold individually and is appropriate wherever a fractional 31/64-inch hole is required.

Key Features

• High speed steel construction for durability in general-purpose metal drilling
• 118-degree standard point angle with web-thinned, tapered web for easier entry
• Bright uncoated finish — no coating interference in tight-tolerance applications
• Right-hand cut with regular spiral flute and 4xD flute length ratio for chip evacuation
• Straight-cylindrical shank compatible with standard three-jaw drill chucks
• Meets ASME B94.11M and DIN 338 standards

Compatibility

Designed as a general-purpose OEM-style jobber drill bit for use in standard three-jaw drill chucks and collet holders accepting a 0.4844-inch straight shank across drill presses, lathes, and portable power drills.

Installation Notes

Install and remove drill bits only when the drill press or power tool is fully powered down and the chuck is stationary. Secure the straight-cylindrical shank firmly in the chuck before operation to prevent slippage. Use appropriate cutting fluid or coolant for ferrous metals to extend tool life. Follow applicable workplace safety codes and OSHA standards when operating drilling equipment.