Hertel 2385904 Screw Machine Drill Bit 7/32 Inch Hss

Product Description

The HERTEL 2385904 is a screw machine length drill bit designed for high-production drilling in metal, plastic, and similar materials. Built from heavy-duty high-speed steel with an oxide finish, it measures 7/32 inch (0.2188 inch decimal) in diameter with a 2-3/8 inch overall length and a 1-1/4 inch flute length. The 135-degree split point reduces walking on entry and lowers thrust requirements compared to a standard 118-degree geometry. The web-thinned, parallel-web design keeps the cutting edge geometry consistent across the flute length. This bit is sized for use in screw machine setups, drill presses, and CNC applications where a shorter, stiffer drill body reduces deflection and breakage in short-reach drilling operations.

This bit is suited for machine shops, maintenance technicians, HVAC installers, plumbers, and electricians who need a short, rigid bit for drilling in confined spaces or high-cycle production runs. The straight cylindrical shank accepts standard drill chucks without the need for adapters. Right-hand spiral flutes clear chips efficiently during through-hole and blind-hole operations in steel, aluminum, and thermoplastic materials. The oxide coating provides a degree of lubricity and corrosion resistance during dry or mist-cooled drilling.

Key Features

• 135-degree split point reduces thrust and prevents walking on entry
• Heavy-duty high-speed steel construction for extended tool life in metal drilling
• Oxide coating adds surface lubricity and corrosion resistance
• Web-thinned parallel web maintains cutting geometry along the full flute length
• Screw machine length body increases rigidity and reduces deflection versus jobber-length bits
• Straight cylindrical shank fits standard drill chucks with no adapters required

Compatibility

Designed as a screw machine length replacement drill bit for use in drill presses, CNC drill heads, turret lathes, and hand-held electric drills where a 7/32 inch diameter, straight-shank bit is required.

Installation Notes

This bit should be installed and operated by machinists or trade professionals familiar with cutting tool safety. Secure the shank fully in the drill chuck and verify concentricity before operation. Always wear eye protection and secure the workpiece before drilling. Do not exceed the recommended RPM range for the bit diameter and material being drilled, and allow chips to clear the flute before resuming feed in deep-hole applications.