Hertel 41969 Cobalt Jobber Drill Bit 11/64 in 135 Deg

Product Description

The HERTEL 41969 is a cobalt jobber length drill bit designed for drilling through hard and abrasive materials including stainless steel, high-alloy steels, and hardened workpieces. Built from cobalt steel with an oxide and gold coating, it delivers extended tool life and heat resistance under demanding cutting conditions. The bit measures 11/64 inch (0.1719 inch decimal) in diameter with a 3-1/4 inch overall length and a 2-1/8 inch flute length. The 135-degree split point reduces walking and lowers the thrust required to start a hole. Machinists, pipefitters, fabricators, and maintenance technicians reach for this bit when standard high-speed steel tooling falls short on tough base metals.

This bit is suited for production drilling and maintenance applications where material hardness demands a more durable cutting tool. The right-hand spiral flute with regular helix efficiently evacuates chips during through-hole and blind-hole operations. It fits standard three-jaw drill chucks common to drill presses, handheld power drills, and magnetic-base drills. The straight cylindrical shank accepts any chuck designed for that diameter range.

Key Features

• Cobalt steel construction with oxide and gold coating for heat resistance and extended wear life
• 135-degree split point reduces drill walk and lowers entry thrust on hard materials
• 2-1/8 inch spiral flute length with regular helix promotes consistent chip evacuation
• Right-hand cutting direction compatible with all standard forward-rotation drill equipment
• Straight cylindrical shank fits three-jaw chucks without modification
• Two-flute geometry balances cutting speed with chip clearance in ferrous and non-ferrous metals

Compatibility

Designed as an OEM-style replacement and general-purpose cobalt jobber drill bit for use in standard drill chucks accepting a straight cylindrical shank in the 0.1500 to 0.2000 inch diameter range.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists, pipefitters, or maintenance technicians familiar with rotating cutting tools. Secure the workpiece firmly before starting the cut and confirm the chuck is fully tightened on the shank. Use appropriate cutting fluid or coolant when drilling ferrous metals to manage heat buildup and preserve edge life. Inspect the cutting edges for wear before each use and replace the bit if chipping or rounding is evident.