Cleveland C71139 Jobber Drill Bit No. 39 0.0995 in Hss

Product Description

The CLEVELAND C71139 is a wire gauge No. 39 jobber length drill bit designed for general-purpose drilling in metal, wood, and plastic. It is manufactured from high speed steel with an oxide finish that reduces friction and helps extend tool life under moderate cutting conditions. The bit features a 118-degree standard point angle and a right-hand spiral flute with web thinning for improved chip evacuation and easier penetration. At 0.0995 inches in decimal diameter and 2.375 inches overall length, it fits standard drill chucks and is well suited for production and maintenance drilling applications. Machinists, tool and die workers, and general tradespeople are the primary users.

This bit is used in light to medium duty drilling operations across manufacturing, fabrication, and maintenance environments. The straight-cylindrical shank fits standard three-jaw chucks on benchtop drill presses, hand drills, and CNC machines. The 1.375-inch flute length accommodates typical hole depths at this diameter. The regular spiral type and 4xD flute-to-diameter ratio make it a reliable choice for through-hole and blind-hole work in mild steel, aluminum, thermoplastics, and similar materials.

Key Features

• Wire gauge No. 39 size — 0.0995 inches decimal diameter with a tolerance of -0.0005 to 0.0000 inches
• 118-degree standard point angle with web-thinned, tapered web for easier entry and reduced thrust
• High speed steel construction with oxide coating to reduce heat buildup and surface friction
• Right-hand cut with regular spiral and 2-flute configuration for efficient chip removal
• Straight-cylindrical shank — 1.0 inch shank length and 0.0995 inches shank diameter for secure chuck grip
• Manufactured to ASME B94.11M and DIN 338 standards

Compatibility

Designed as a general-purpose jobber length drill bit suitable for standard three-jaw chucks accepting straight-cylindrical shanks at this diameter. Part of the CLEVELAND Series 2001G general-purpose drill bit line.

Installation Notes

Installation and use of this bit should follow standard machine shop safety practices. Secure the shank fully in the chuck before operation and verify spindle speed is appropriate for the material being drilled. Wear appropriate eye protection and secure the workpiece before starting the drill. Inspect the cutting edges before each use and replace the bit if chipping or dulling is observed.