Hertel 74131434 5/32 Inch Cobalt Drill Bit Split Point

Product Description

The HERTEL 74131434 is a screw machine length drill bit designed for high-performance drilling in metal and hard materials. Built from cobalt tool steel with a TiAlN coating, it delivers extended tool life and heat resistance during demanding cutting operations. The split point geometry at 135 degrees reduces walking and requires no center punch on most surfaces. At 2-1/16 inches overall length, the shortened screw machine profile provides added rigidity in drill press, CNC, and turret lathe applications. This bit is installed and used by machinists, tool and die technicians, and maintenance professionals working in production or job shop environments.

This drill bit is suited for drilling into steel, stainless steel, cast iron, and other ferrous and hard materials where standard high-speed steel bits wear prematurely. The screw machine length format is commonly used in machine tool setups where reduced overhang and vibration are priorities. The straight-cylindrical shank seats directly in standard drill chucks without adapters. Web thinning reduces thrust force at the cutting tip, which extends both bit life and workpiece quality during through-hole drilling operations.

Key Features

• Cobalt tool steel construction for high heat and wear resistance
• TiAlN coating extends surface hardness and reduces friction at the cutting edge
• 135-degree split point reduces walking and lowers required thrust force
• Web-thinned parallel web configuration for improved chip evacuation
• Screw machine length at 2-1/16 inches overall for maximum rigidity
• Right-hand spiral flute with straight-cylindrical shank for standard chuck compatibility

Compatibility

Designed as a screw machine length replacement drill bit for use in standard 3-jaw drill chucks, CNC machining centers, drill presses, and turret lathes accepting straight-cylindrical shank bits in the 0.1500 to 0.2000 decimal inch size range.

Installation Notes

Installation is performed by machinists or maintenance technicians. Power down and lock out the machine before changing or inspecting the bit. Seat the straight shank fully and evenly in the chuck and tighten securely before operation. Inspect the cutting edge and coating for wear or chipping before each use, as a damaged tip increases heat buildup and reduces hole quality.