Hertel 2386803 Screw Machine Drill Bit 17/64 in Hss Tin

Product Description

The HERTEL 2386803 is a screw machine length drill bit designed for high-speed steel cutting in metal fabrication, machining, and general drilling applications. The 17/64 inch (0.2656 inch decimal) diameter bit features a 135-degree split point that reduces walking on contact and requires less feed pressure than a standard 118-degree point. A titanium nitride (TiN) coating increases surface hardness and extends tool life in repetitive drilling cycles. At 2-5/8 inches overall length, this stub-length geometry provides rigidity and reduced deflection compared to jobber-length bits, making it well suited for CNC, drill press, and hand-drill use where shorter reach improves hole accuracy.

This bit is built for heavy-duty shop and field use. It fits standard straight-shank drill chucks and is appropriate for machinists, maintenance technicians, fabricators, and trade professionals drilling ferrous and non-ferrous materials. The screw machine length format is common in production drilling environments where bit stiffness and concentricity matter. Typical applications include sheet metal, structural steel, aluminum, and general metalworking tasks where a stub-length bit is preferred over a longer jobber drill.

Key Features

• 135-degree split point reduces thrust force and minimizes bit walking on hard or smooth surfaces
• TiN coating extends cutting life and reduces friction during chip evacuation
• Screw machine (stub) length at 2-5/8 inches OAL provides greater rigidity and reduced deflection
• Web-thinned parallel web construction improves chip clearance and cutting efficiency
• Right-hand spiral flute geometry compatible with standard drill chucks and spindles
• Heavy-duty grade high-speed steel construction suitable for demanding production environments

Compatibility

Designed as an OEM-style screw machine drill bit for use in any standard straight-cylindrical shank drill chuck accepting a 17/64 inch diameter bit.

Installation Notes

Installation is performed by machinists, tool and die technicians, or qualified trade professionals using a drill press, CNC machine, or hand drill with a compatible chuck. Ensure the chuck is fully tightened and the work piece is securely clamped or fixtured before drilling. Use appropriate cutting fluid or coolant for extended tool life when drilling ferrous materials. Inspect the bit for wear or chipping before each use and replace if the cutting edges show degradation.