Hertel 2386464 Size 39 Screw Machine Drill Bit Hss

Product Description

The HERTEL 2386464 is a screw machine length drill bit designed for short-reach, high-accuracy drilling in metal fabrication, machining, and maintenance applications. Built from high-speed steel with an oxide coating, this bit carries a wire gauge size 39, equivalent to 0.0995 inches in decimal. The 135-degree split point starts on contact without a center punch and reduces walking on hard or smooth surfaces. The web-thinned construction lowers thrust requirements and improves chip evacuation. A right-hand spiral flute and straight cylindrical shank make this bit compatible with standard drill chucks and CNC turret setups. Overall length is 1-13/16 inches with a 13/16-inch flute length.

Screw machine length drill bits are shorter than jobber-length bits, providing added rigidity and reduced deflection when drilling in tight clearances or on CNC screw machines, turret lathes, and drill presses. This bit is suited for production drilling in steel, cast iron, aluminum, and similar materials where hole location accuracy and repeat performance matter. The oxide finish provides mild lubricity and corrosion resistance during use. Machinists, tool-and-die technicians, and industrial maintenance mechanics are the primary installers and users of this bit.

Key Features

• Wire size 39 (0.0995 inches) straight cylindrical shank for standard chuck compatibility
• 135-degree split point for self-starting entry without center punching
• Web-thinned, parallel web configuration reduces drilling thrust
• High-speed steel construction handles moderate heat and abrasion in production environments
• Oxide coating provides mild lubricity and surface protection
• Screw machine length (1-13/16 inches OAL) delivers rigidity and reduced deflection

Compatibility

Designed as a standard screw machine length drill bit for use in drill chucks, CNC turrets, and turret lathes accepting a 0.0995-inch straight cylindrical shank.

Installation Notes

This bit is installed by machinists and industrial mechanics using standard three-jaw or collet-style drill chucks. Ensure the chuck is fully tightened and the shank is fully seated before operation. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain hole quality. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point shows signs of damage.