Cleveland C72157 Jobber Drill Bit Wire 57 Hss 118 Deg

Product Description

The CLEVELAND C72157 is a wire gauge size 57 jobber length drill bit designed for general-purpose drilling in metal, wood, and plastic. Manufactured from high speed steel with a bright, uncoated finish, this bit features a 118-degree standard point angle and a web-thinned, tapered web configuration for improved penetration and reduced thrust. The straight-cylindrical shank measures 0.0430 inches in diameter, matching the drill body diameter exactly. At 1.75 inches overall length with a 0.75-inch spiral flute, this bit is sized for close-quarters drilling tasks in light fabrication, maintenance, and assembly applications. Licensed HVAC technicians, electricians, plumbers, and general maintenance trades commonly use wire gauge bits of this size for pilot holes and precision-diameter work.

The C72157 is suited for benchtop drill presses, hand drills, and CNC drilling operations where consistent tolerance and repeatability matter. Its right-hand spiral flute promotes efficient chip evacuation during through-hole and blind-hole drilling. The bit conforms to ASME B94.11M and DIN 338 standards, making it a reliable choice in shops and field service environments that require dimensionally verified tooling. With a decimal inch diameter of 0.0430, it fills a specific wire gauge need in electrical, plumbing, and mechanical assembly contexts where standard fractional sizes do not apply.

Key Features

• Wire gauge size 57, decimal diameter 0.0430 inches for precise small-diameter drilling
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• High speed steel construction provides durability across a broad range of workpiece materials
• Bright uncoated finish suitable for general-purpose use without added coating cost
• Regular spiral, two-flute design promotes efficient chip clearance in short-hole drilling
• Conforms to ASME B94.11M and DIN 338 standards for dimensional consistency

Compatibility

Designed as a general-purpose replacement or stock drill bit for standard three-jaw chucks and collet systems accepting a 0.0430-inch straight-cylindrical shank. Compatible with hand drills, drill presses, and CNC equipment configured for wire gauge tooling in the 0.0000 to 0.0500 inch diameter range.

Installation Notes

Secure the straight-cylindrical shank fully in a properly sized chuck or collet before operation to prevent slippage on this small-diameter bit. Use appropriate spindle speeds for the workpiece material and drill diameter — small-diameter bits require higher RPM than larger fractional sizes to maintain effective cutting action. Inspect the cutting edges before each use; at 0.0430 inches, the bit is susceptible to breakage if deflected or run at incorrect feed pressure. Dispose of worn or broken bits safely and replace with a fresh bit rather than attempting to regrind at this diameter.