Hertel 04138822 Cobalt Jobber Drill Bit No. 35

Product Description

The HERTEL 04138822 is a cobalt jobber-length drill bit designed for heavy-duty holemaking in hard and abrasive materials. Built to wire gauge size No. 35, the bit has a decimal diameter of 0.110 inches. The 135-degree split point starts on contact without a center punch and reduces walking on curved or flat workpieces. An oxide and TiN coating improves surface hardness and heat resistance during drilling. The straight-cylindrical shank seats in standard three-jaw chucks. Overall length is 2-5/8 inches with a flute length of 1-1/2 inches. Machinists, maintenance technicians, and fabricators install this bit for precision holemaking in steel, stainless, and other tough alloys.

This drill bit is suited for production and maintenance drilling applications where standard high-speed steel bits wear too quickly. The regular spiral, right-hand cutting direction, and web-thinned tapered web geometry combine to produce clean, consistent holes in ferrous metals and hard plastics. It is sold individually and is intended for use in handheld drills, drill presses, and CNC machines equipped with a chuck sized for a 0.110-inch straight shank.

Key Features

• Wire gauge size No. 35 with a decimal diameter of 0.110 inches for precision fitment
• 135-degree split point for self-starting entry and reduced thrust force
• Cobalt construction rated heavy duty for drilling hard and abrasive metals
• Oxide and TiN coating for improved heat and wear resistance
• Web-thinned tapered web reduces cutting resistance and chip packing
• Right-hand regular spiral flute promotes efficient chip evacuation

Compatibility

Designed as an OEM-style replacement or direct fitment jobber drill for use in any standard drill press, hand drill, or CNC machine accepting a 0.110-inch straight-cylindrical shank.

Installation Notes

This bit is installed by machinists and maintenance technicians familiar with metalworking operations. Secure the shank fully in the chuck and verify it is centered before operation. Use appropriate cutting fluid or coolant when drilling ferrous metals to extend bit life, as coolant-through is not supported by this bit design. Follow shop safety standards and applicable OSHA guidelines for rotating tool operation.