Hertel 84577857 Jobber Drill Bit Letter a 118 Degree Hss

Product Description

The HERTEL 84577857 is a jobber-length drill bit sized to Letter A (0.2340 inches), designed for general-purpose metal drilling in production and maintenance environments. Built from high speed steel with a bright, uncoated finish, the bit runs a standard 118-degree point angle with a web-thinned, tapered web for easier penetration and reduced thrust. The straight-cylindrical shank accepts standard three-jaw chucks without modification. At 3-7/8 inches overall length and 2-5/8 inches of flute length, this bit fits the jobber-length category used across drill presses, hand drills, and machining centers. It is a right-hand cut, two-flute, spiral configuration suited to a wide range of ferrous and non-ferrous materials.

This drill bit is intended for general-purpose drilling applications in metalworking, maintenance, and fabrication settings. The Letter A diameter (0.2340 inches) falls within the 0.2000 to 0.2500 inch decimal inch size range and is commonly used where fractional sizes do not match the required bore diameter precisely. The bit is appropriate for use by machinists, maintenance technicians, and trade professionals working with mild steel, aluminum, cast iron, and similar materials. It is sold as a single unit.

Key Features

• Letter A size — 0.2340 inches decimal equivalent for precise bore diameter matching
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• High speed steel construction for durability across ferrous and non-ferrous materials
• Right-hand cut, two-flute spiral configuration with regular spiral type
• Straight-cylindrical shank fits standard three-jaw chucks without adapters
• Jobber length at 3-7/8 inches OAL and 2-5/8 inches flute length — versatile reach for most setups

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any drill press, hand drill, or machining center equipped with a standard three-jaw chuck sized to accept a 0.2340-inch straight-cylindrical shank.

Installation Notes

Secure the shank fully in the chuck before operation and verify zero runout where tolerances are critical. Always wear eye protection and ensure the workpiece is clamped or fixtured before drilling. Use cutting fluid appropriate for the material being drilled to extend bit life and improve hole quality. Inspect the cutting edges and point before each use and replace the bit if chipping or excessive wear is observed.