Hertel 85704328 Jobber Drill Bit 55 0.0520 Hss 118

Product Description

The HERTEL 85704328 is a jobber-length drill bit in wire gauge size 55, equivalent to 0.0520 inches in decimal. Built from high-speed steel with a bright uncoated finish, this bit is suited for general-purpose drilling in a wide range of materials. The standard 118-degree split point provides accurate starting without a center punch in most applications. A two-flute spiral configuration with regular spiral type and tapered web promotes efficient chip evacuation. Overall length is 1.875 inches, with a flute length of 0.875 inches and a straight-cylindrical shank at 0.0520 inches diameter. The web-thinned construction reduces cutting force and heat buildup during operation.

This bit is designed for light-duty precision drilling tasks common in metalworking, fabrication, HVAC sheet metal work, electrical rough-in, and plumbing applications where small-diameter holes are required. Wire gauge sizing places this bit in the 0.0500 to 0.1000 inch size range, making it appropriate for tapping pilot holes, through-holes in thin gauge material, and component mounting operations. It is sold individually with a minimum order quantity of 12 units, making it practical for shop stocking or service van kits.

Key Features

• Wire gauge size 55 — 0.0520 inch decimal equivalent for precise small-diameter drilling
• High-speed steel construction provides durability across general-purpose drilling applications
• 118-degree standard point angle with web-thinned tip reduces thrust and improves self-centering
• Two-flute regular spiral design with tapered web promotes chip clearance in through-hole drilling
• Bright uncoated finish — compatible with cutting fluid use for extended bit life
• Right-hand cut, straight-cylindrical shank fits standard drill chucks without slippage

Compatibility

Designed as a general-purpose jobber-length drill bit suitable for use in standard drill presses, hand drills, and CNC drilling applications where a straight-cylindrical shank and 0.0520 inch diameter are required.

Installation Notes

Installation and use should follow standard machining safety practices. Secure the workpiece before drilling and verify chuck tightness before operating any drilling equipment. Cutting fluid is recommended when drilling ferrous metals to extend bit life and reduce heat. Inspect the cutting edge for wear or chipping before each use and replace bits that show signs of dull or damaged flutes.