Hertel 84579283 Jobber Drill Bit 27/64 Inch Hss Oxide

Product Description

The HERTEL 84579283 is a 27/64 inch jobber-length drill bit designed for general-purpose holemaking in metal, wood, and composite materials. Built from high speed steel with an oxide finish, it features a 135-degree split point that reduces walking on contact and requires no center punch for most applications. The web-thinned, tapered web construction lowers cutting resistance and improves chip evacuation. At 5-3/8 inches overall length with a 3-15/16 inch flute length, this bit fits standard drill chucks and is suited for bench drills, hand drills, and CNC drilling operations in shop and field environments.

This drill bit is a heavy-duty grade jobber series tool intended for production and maintenance drilling tasks. The straight-cylindrical shank with a 27/64 inch diameter seats securely in three-jaw chucks without requiring a collet adapter. The regular spiral flute geometry and right-hand cutting direction make it compatible with standard drill press and handheld drill setups. It is commonly used by machinists, millwrights, pipefitters, and general maintenance technicians working in industrial and commercial environments.

Key Features

• 135-degree split point reduces drill walk and eliminates need for center punching on most surfaces
• High speed steel construction with oxide coating for corrosion resistance and reduced friction
• Web-thinned, tapered web lowers thrust force and improves chip clearance
• Heavy-duty grade rated for demanding production drilling applications
• Straight-cylindrical shank fits standard 3-jaw drill chucks directly
• NAS specification designation for dimensional and performance conformance

Compatibility

Designed as a standard jobber-length drill bit for use in any drill press, handheld power drill, or CNC machining center accepting a straight-cylindrical shank in the 27/64 inch diameter range.

Installation Notes

Secure the shank fully in the chuck before operation and verify chuck key is removed prior to powering on. Use appropriate cutting fluid or coolant when drilling ferrous metals to extend tool life and maintain hole quality. Inspect the cutting edges before use and replace the bit if chipping or excessive wear is observed. Follow applicable shop safety standards and OSHA general industry guidelines for rotating tool operation.