Hertel 02387330 Screw Machine Drill Bit Size 40 Hss Tin

Product Description

The HERTEL 02387330 is a screw machine length drill bit designed for short-hole drilling in metal, plastic, and composite materials. Built from high-speed steel (HSS) with a titanium nitride (TiN) coating, it delivers extended tool life and reduced friction compared to uncoated bits. The 135-degree split point starts on contact without a center punch, reducing walking on hard or smooth surfaces. At 1-13/16 inches overall length, this stub-length geometry provides added rigidity in drill press, turret lathe, and CNC screw machine applications. Machinists and tool-and-die technicians working in high-cycle production environments are the primary users.

This bit is sized at wire gauge number 40, which corresponds to 0.098 inch decimal diameter. The screw machine length format makes it well-suited for close-quarters drilling on automatic screw machines, turret lathes, and short-travel drill press setups. The straight-cylindrical shank fits standard Jacobs-style chucks and collet holders sized for 0.098 inch shanks. The right-hand spiral flute clears chips efficiently in typical through-hole and blind-hole operations on mild steel, aluminum, and thermoplastics.

Key Features

• TiN coating increases surface hardness and lubricity for longer tool life in repetitive drilling cycles
• 135-degree split point reduces thrust force and eliminates center-punch requirement on flat stock
• Web-thinned, parallel web construction improves chip evacuation and reduces heat buildup
• Stub screw machine length increases rigidity and reduces deflection versus jobber-length bits
• Straight-cylindrical shank fits standard chucks and collet tooling without modification
• Right-hand cutting direction compatible with standard spindle rotation on all common machine tools

Compatibility

Designed as an OEM-style replacement or stock drill bit for screw machines, turret lathes, and drill presses accepting straight-shank tooling in the 0.098 inch diameter range.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or toolroom technicians. Ensure the machine spindle is fully stopped and the chuck or collet is properly tightened before beginning any drilling operation. Do not exceed the rated speed for the workpiece material and bit diameter. Inspect the cutting edge and TiN coating for wear or chipping before each use; a damaged edge increases the risk of bit breakage and workpiece damage.