Hertel 85703502 Jobber Drill Bit 19/64 Inch Hss 118 Degree

Product Description

The HERTEL 85703502 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and plastics. It measures 19/64 inches (0.2969 inches decimal) in diameter with a 4-3/8 inch overall length and a 3-1/16 inch flute length. The bit is ground from high speed steel with a bright uncoated finish and features a standard 118-degree split point with web thinning for reduced thrust and easier starting. The straight-cylindrical shank fits standard three-jaw chucks used on drill presses, hand drills, and CNC equipment. Machinists, maintenance technicians, and trade professionals across HVAC, plumbing, and electrical disciplines reach for this size routinely in sheet metal and structural fab work.

This bit suits residential and light commercial applications where a mid-range fractional diameter is needed. The 19/64 inch size is commonly used for clearance holes, pilot holes before tapping, and stepped enlargement of existing bores. Right-hand spiral flutes evacuate chips efficiently during through-hole drilling in mild steel, aluminum, copper, and similar materials. The regular spiral and tapered web configuration make it reliable across both hand-held and machine-held setups without requiring special toolholders.

Key Features

• 19/64 inch (0.2969 inch) diameter for mid-range fractional hole sizing
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• High speed steel construction for general-purpose metal and multi-material drilling
• Bright uncoated finish — no coating buildup to affect dimensional tolerance
• Right-hand cut with 2-flute regular spiral for efficient chip evacuation
• Straight-cylindrical shank compatible with standard drill chucks and collets

Compatibility

Designed as a general-purpose jobber-length drill bit fitting any standard three-jaw chuck or collet capable of accepting a 19/64 inch straight shank, including drill presses, hand drills, and CNC drilling machines.

Installation Notes

Secure the shank fully in the chuck and verify runout before drilling. Use appropriate cutting fluid or lubricant when drilling hardened or thick steel stock to extend tool life and maintain hole quality. Ensure the workpiece is clamped securely before beginning the cut. Inspect the cutting edges for chipping or wear before each use and replace the bit if the point is compromised.