Hertel 04138210 Cobalt Jobber Drill Bit 3/32 Inch

Product Description

The HERTEL 04138210 is a cobalt jobber-length drill bit designed for heavy-duty holemaking in ferrous and hard metals. It features a 135-degree split point that reduces walking and requires no center punch on most surfaces. The web-thinned, tapered web construction lowers cutting resistance and helps clear chips efficiently through the spiral flute. At 2.25 inches overall length with a 1.25-inch flute length, this is a standard jobber geometry suited for general-purpose drilling in production and maintenance environments. The oxide and TiN coating improves surface hardness and heat resistance for extended tool life in demanding applications.

This drill bit is suited for metalworking applications across manufacturing, maintenance, and fabrication environments. Its 3/32-inch diameter and straight cylindrical shank make it compatible with standard keyless and keyed drill chucks. Right-hand cutting direction is standard for conventional drilling setups. The cobalt construction makes it appropriate for stainless steel, hardened alloys, cast iron, and other difficult-to-machine materials where high-speed steel bits would wear prematurely.

Key Features

• Cobalt construction rated for heavy-duty drilling in hard and abrasive metals
• 135-degree split point reduces bit walking and lowers required feed force
• Web-thinned, tapered web reduces cutting resistance and aids chip evacuation
• Oxide and TiN dual coating improves heat resistance and extends tool life
• Straight cylindrical shank fits standard drill chucks without adapters
• Regular spiral flute geometry for consistent chip removal during through-hole drilling

Compatibility

Designed as an OEM-style jobber drill bit for use in standard drill chucks accepting a 3/32-inch straight cylindrical shank across handheld, bench, and machine tool applications.

Installation Notes

Installation is performed by machinists, toolmakers, or maintenance technicians. Secure the shank fully in a properly sized drill chuck before operation and confirm the chuck is tightened at all jaws. Always power down and lock out the drilling machine before changing bits. Use appropriate cutting fluid for cobalt drill bits when working with stainless steel or hardened alloys to maintain edge life and prevent work hardening.