Hertel 85704476 Jobber Drill Bit 13/64 Inch Hss Tin

Product Description

The HERTEL 85704476 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and plastic. It is manufactured from high speed steel (HSS) with a titanium nitride (TiN) coating that reduces friction and extends cutting life compared to uncoated HSS. The bit measures 13/64 inch (0.2031 inch decimal) in diameter with a standard 118-degree point angle and a web-thinned, tapered web configuration for easier penetration on center. Overall length is 3-5/8 inches with a 2-7/16 inch flute length. Machinists, HVAC technicians, plumbers, and electricians reach for this size for sheet metal, structural steel, and general fabrication work.

This bit fits standard drill presses, hand drills, and right-angle drill drivers using a straight-cylindrical shank. It is suited to residential and light commercial trade applications where a reliable, mid-range jobber bit is needed for repetitive hole-making in ferrous and non-ferrous materials. The 13/64 inch diameter is commonly used for pilot holes, conduit knockouts, and bracket mounting in HVAC, electrical, and plumbing rough-in work. The two-flute spiral design provides efficient chip evacuation during drilling.

Key Features

• TiN coating reduces friction and improves wear resistance over standard uncoated HSS
• 118-degree standard point angle for general-purpose use across a broad range of materials
• Web-thinned tapered web reduces thrust force required at the point
• Right-hand cut, two-flute spiral design promotes consistent chip evacuation
• Straight-cylindrical shank fits standard drill chucks without adapters
• General purpose grade suitable for trade field use and bench drilling operations

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard drill press, corded hand drill, or cordless drill driver equipped with a chuck that accepts straight-cylindrical shanks sized for 13/64 inch tooling.

Installation Notes

Installation of this bit is performed by machinists, HVAC technicians, electricians, and plumbers using standard drill equipment. Secure the straight-cylindrical shank firmly in the chuck before operation and confirm the workpiece is clamped or fixtured to prevent movement. Always wear appropriate eye protection when drilling metal. Coolant through is not supported on this bit; apply cutting fluid externally when drilling harder ferrous materials to prolong cutting edge life.