Hertel 84578780 Jobber Drill Bit 56 Hss Tin

Product Description

The HERTEL 84578780 is a wire gauge size 56 jobber length drill bit designed for precision drilling in metal, plastic, and similar materials. It is manufactured from high speed steel with a titanium nitride (TiN) coating that increases surface hardness and extends tool life under repeated use. The bit measures 1.75 inches in overall length with a 0.75-inch flute length and a decimal diameter of 0.0465 inches. A standard 118-degree point angle and web-thinned tip improve entry geometry and reduce walking on entry. This bit is a general-purpose cutting tool used by machinists, maintenance technicians, and trade professionals working with close-tolerance small-diameter holes.

The 84578780 is suited for general-purpose drilling applications requiring a small-diameter wire gauge bit. Common uses include pilot holes, through-holes in sheet metal, fixture work, and precision assembly operations. The 2-flute spiral configuration provides consistent chip evacuation in both ferrous and non-ferrous materials. The straight-cylindrical shank fits standard drill chucks without modification, making it compatible with benchtop drill presses, hand drills, and CNC setups configured for straight-shank tooling.

Key Features

• Wire gauge size 56, decimal diameter 0.0465 inches for close-tolerance small-diameter drilling
• TiN coating increases surface hardness and reduces friction for longer tool life
• 118-degree standard point angle with web-thinned tip for improved entry and reduced walking
• 2-flute regular spiral design promotes consistent chip evacuation
• Straight-cylindrical shank fits standard drill chucks on hand drills, drill presses, and CNC equipment
• Tapered web configuration adds rigidity along the flute length

Compatibility

Designed as a general-purpose replacement or stock bit for applications requiring a wire gauge size 56 straight-shank jobber length drill bit in high speed steel.

Installation Notes

Secure the straight-cylindrical shank firmly in a keyed or keyless chuck before use. Ensure the drill press or handheld drill is powered off and the chuck is fully tightened before beginning the operation. At this diameter, use appropriate feed pressure and cutting fluid where applicable to avoid bit deflection or breakage. Dispose of worn or damaged bits in accordance with shop safety protocols.