Value Collection BS27N0078 Jobber Drill Bit 78 Wire Hss

Product Description

The VALUE COLLECTION BS27N0078 is a wire gauge size 78 jobber-length drill bit designed for precision drilling in small-diameter applications. Built from high speed steel (HSS) with a bright, uncoated finish, this bit features a 130-degree point angle and a slow spiral flute configuration. The web-thinned, tapered web design reduces thrust and improves chip evacuation at entry. With an overall length of 0.875 inches and a flute length of 0.1875 inches, it is sized for work requiring tight tolerances in soft metals and non-ferrous materials. Installation and use are handled by machinists, tool-and-die technicians, and precision metalworkers.

This bit is rated for aluminum and non-ferrous workpiece materials, making it well suited for PCB drilling, instrument manufacturing, watchmaking, and fine metalwork applications where a 0.0160-inch diameter hole is required. The straight cylindrical shank seats directly into standard collet chucks and drill press spindles without adapters. The slow spiral geometry helps maintain control and surface finish in soft, gummy materials that can grab or deflect faster-spiral bits. Right-hand cutting direction is standard for conventional drill press and CNC spindle use.

Key Features

• Wire gauge size 78, 0.0160-inch decimal diameter for precision small-hole work
• 130-degree point angle optimized for reduced walking and clean entry on non-ferrous materials
• Slow spiral flute promotes chip control and surface finish in aluminum and soft metals
• Web-thinned tapered web reduces drilling thrust and extends bit life
• Bright, uncoated HSS construction — compatible with standard regrinding
• Straight cylindrical shank fits standard collet chucks and drill press spindles without adapters

Compatibility

Designed as a general-purpose OEM-style replacement or stock drill bit for use in any standard collet chuck, pin vise, or drill press spindle accepting a 0.0160-inch straight shank. Meets ANSI specification designation for jobber drill geometry.

Installation Notes

Installation is performed by machinists or precision metalworkers. Secure the shank fully in the collet or chuck before operation and verify runout before drilling. Power down the machine and release all stored energy before changing bits. Avoid side-loading this diameter — the small cross-section is susceptible to breakage under lateral force or misalignment.