Hertel 2385771 Screw Machine Drill Bit Size 1 Hss

Product Description

The HERTEL 2385771 is a screw machine length drill bit designed for short-hole drilling operations where rigidity and precision matter. Built from high-speed steel with an oxide finish, this bit features a 135-degree split point that reduces walking on entry and lowers the thrust needed to start a cut. The web-thinned, parallel-web construction improves chip evacuation and extends tool life in production drilling environments. At 2-7/16 inches overall length with a 1-5/16 inch flute length, it fits standard drill chucks and screw machine setups. Licensed machinists, tool-and-die technicians, and maintenance mechanics are the typical users.

This bit is suited for drilling in metals, plastics, and composite materials in both shop and field applications. The straight-cylindrical shank seats securely in standard three-jaw chucks and collets. Its screw machine length body is shorter than jobber-length bits, reducing deflection and improving hole location accuracy in CNC lathes, screw machines, drill presses, and turret setups. The right-hand spiral flute direction is standard for conventional drilling with clockwise-rotating spindles.

Key Features

• 135-degree split point reduces drill walking and lowers entry thrust
• High-speed steel construction handles a broad range of workpiece materials
• Oxide coating provides mild lubricity and corrosion resistance during use
• Web-thinned parallel web improves chip flow and reduces heat buildup
• Screw machine length body increases rigidity versus jobber-length bits
• Straight-cylindrical shank fits standard chucks and collets without adapters

Compatibility

Designed as an OEM-style replacement or direct-fit drill bit for screw machines, CNC lathes, drill presses, and turret setups requiring a wire-gauge Size 1 (0.2280 inch decimal) straight-shank bit.

Installation Notes

A licensed machinist or trained shop technician should install and operate this bit. Power down and lock out the machine spindle before changing tooling. Secure the straight-cylindrical shank fully within the chuck jaws or collet and verify runout before cutting. Do not exceed the spindle speed and feed rate recommended for the workpiece material and bit diameter.