Hertel 74132150 Screw Machine Drill Bit Size 18 Cobalt

Product Description

The HERTEL 74132150 is a screw machine length drill bit designed for high-productivity metal drilling in tight or confined setups where a shorter tool profile is required. Built from cobalt steel and finished with a TiAlN coating, this bit handles hard ferrous metals, stainless, and heat-resistant alloys that would wear out standard HSS tooling quickly. The 135-degree split point starts on contact without a center punch and reduces walking on curved or irregular surfaces. At 2.125 inches overall length with a 1.0625-inch flute, the compact geometry is built for drill presses, CNC machines, and screw machine applications where tool extension must be minimized.

This bit is suited for production machining environments, job shops, and maintenance operations where Size 18 wire gauge holes are drilled repeatedly in tough materials. The straight-cylindrical shank seats in standard three-jaw chucks and collet-style holders without additional adapters. Right-hand spiral flutes evacuate chips efficiently during through-hole and blind-hole drilling. The web-thinned, parallel web configuration reduces thrust load and improves chip clearance, making this a practical choice for both manual and automated drilling cycles in metal fabrication, aerospace component work, and industrial maintenance.

Key Features

• Cobalt steel construction resists heat and wear in hard and abrasive materials
• TiAlN coating adds surface hardness and thermal resistance for extended tool life
• 135-degree split point self-centers on contact and reduces required thrust
• Web-thinned parallel web lowers cutting resistance in tough alloys
• Compact screw machine length OAL of 2.125 inches suits confined drilling setups
• Straight-cylindrical shank fits standard chucks and collet holders without adapters

Compatibility

Designed as a screw machine length replacement or production drill bit for any setup requiring a Size 18 wire gauge (0.1695 inch) straight-shank drill in a standard three-jaw chuck or collet holder.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with metal cutting practices. Ensure the spindle is fully stopped and the machine is powered down before loading or changing tooling. Seat the straight-cylindrical shank fully into the chuck or collet and verify runout before beginning a cut. This bit does not support coolant-through delivery; use external cutting fluid application when drilling heat-sensitive or work-hardening alloys.