Hertel 85703569 Jobber Length Drill Bit 25/64 in Hss

Product Description

The HERTEL 85703569 is a jobber-length drill bit designed for general-purpose drilling in metal, wood, and plastics. It measures 25/64 inch (0.3906 inch decimal) in diameter with a 5-1/8 inch overall length and a 3-3/4 inch flute length. The bit is manufactured from high speed steel with a bright uncoated finish. A 118-degree standard point angle and web-thinned, tapered web configuration reduce entry force and improve centering on flat and curved surfaces. Right-hand spiral flutes clear chips efficiently during through-hole and blind-hole applications.

This bit suits production and maintenance drilling in fabrication shops, plumbing rough-in, HVAC bracket work, and electrical panel installations where a standard fractional size in the 0.3500 to 0.4000 inch range is required. The straight-cylindrical shank fits standard three-jaw chucks on corded drills, drill presses, and magnetic-base drills. It is sold individually and is appropriate for tradespeople who need a reliable general-purpose bit for everyday field or shop use.

Key Features

• 25/64 inch diameter (0.3906 inch decimal) for precise fractional sizing
• 118-degree standard point angle with web-thinned tapered web for reduced entry force
• High speed steel construction for durability across common workpiece materials
• 3-3/4 inch regular spiral flute length for efficient chip evacuation
• Straight-cylindrical shank compatible with standard three-jaw chucks
• Right-hand cut, 2-flute design suited to general-purpose drilling applications

Compatibility

Designed as a general-purpose jobber-length drill bit fitting any standard three-jaw chuck that accepts a 25/64 inch straight-cylindrical shank, suitable for use in the 0.3500 to 0.4000 inch drill bit size range.

Installation Notes

Secure the shank fully in the chuck and verify runout before drilling. Power down the drill press or unplug the hand drill before bit changes. Use appropriate cutting fluid when drilling hardened steel or stainless to extend tool life. Follow shop safety standards and wear eye protection during all drilling operations.