Hertel 74131467 Screw Machine Drill Bit 13/64 in Cobalt

Product Description

The HERTEL 74131467 is a cobalt screw machine length drill bit designed for high-performance drilling in hard and abrasive materials. With a 13/64 inch (0.2031 inch decimal) diameter and a TiAlN coating, this bit handles elevated cutting temperatures while maintaining edge hardness. The 135-degree split point allows fast penetration with minimal walking, reducing the need for a center punch on most surfaces. At 2.25 inches overall length, the screw machine format provides added rigidity over jobber-length bits, making it well suited for drill press, CNC, and turret lathe setups where stub-length control is a priority.

This drill bit is used in metalworking applications where tool life and heat resistance matter. The cobalt construction and TiAlN finish make it appropriate for stainless steel, cast iron, high-alloy steels, and other work-hardening materials. The straight cylindrical shank fits standard drill chucks without modification. Machinists, tool and die professionals, and maintenance technicians reach for this bit when drilling tough ferrous materials in production or repair contexts.

Key Features

• Cobalt tool material with TiAlN coating for heat resistance and extended tool life
• 135-degree split point for fast starts and reduced thrust on hard materials
• Web-thinned parallel web construction reduces cutting resistance
• Screw machine (stub) length at 2.25 inches OAL provides rigidity over jobber bits
• Regular spiral flute with right-hand cutting direction
• Straight cylindrical shank for standard chuck compatibility

Compatibility

Designed as an OEM-style screw machine length drill bit for use in standard drill chucks, drill presses, CNC machining centers, and turret lathes accepting straight cylindrical shank bits in the 13/64 inch diameter range.

Installation Notes

Installation is performed by machinists or maintenance technicians using standard drill chuck or collet toolholding equipment. Ensure the machine spindle is fully stopped and the chuck is properly tightened before beginning any drilling operation. Appropriate cutting fluid or coolant is recommended when drilling hard alloys, even though this bit does not support coolant-through delivery. Follow machine manufacturer guidelines for spindle speed and feed rate when working with cobalt tooling.