Osg 61517 Screw Machine Drill Bit Wire 51 0.0670 in Hss

Product Description

The OSG 61517 is a screw machine length (stub length) drill bit designed for high-performance drilling in metalworking applications. It carries a wire gauge size of 51, equal to 0.0670 inches (1.70 mm) in diameter, with an overall length of 1.6535 inches (42.00 mm). The bit is manufactured from vanadium high speed steel and features a titanium nitride (TiN) coating that extends surface hardness and wear resistance. A 140-degree faceted point angle reduces thrust and improves accuracy on entry, while a web-thinned, tapered web design lowers cutting resistance. This bit is sold individually and suited for use in machine shops, CNC drilling operations, and production environments where compact bit length improves rigidity and reduces deflection.

The OSG 61517 is intended for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate. Its screw machine length profile makes it a practical choice for drill press, turret lathe, and CNC machining center applications where a shorter bit reduces runout and chatter. The 5xD flute-to-diameter ratio and regular spiral flute geometry support consistent chip evacuation in through-hole and blind-hole drilling at small diameters. Machinists and tool-and-die professionals working in production or repair settings will find this bit appropriate for precision small-diameter work.

Key Features

• Wire size 51 (0.0670 inches / 1.70 mm) diameter with a tight tolerance of +0 to -0.014 mm
• TiN coating over vanadium high speed steel for extended tool life on ferrous and non-ferrous materials
• 140-degree faceted point angle reduces entry thrust and improves positional accuracy
• Web-thinned tapered web lowers cutting force at small diameters
• Screw machine (stub) length at 1.6535 inches OAL improves rigidity and minimizes deflection
• Right-hand cut with regular spiral flute and straight cylindrical shank for standard chuck compatibility

Compatibility

Designed as an OEM-style replacement or production-use drill bit for any standard straight-shank drill chuck accepting a 3.00 mm (0.118 inch) shank diameter in drill press, lathe turret, or CNC machining center setups.

Installation Notes

This bit is installed by a machinist or tool operator into a compatible straight-shank chuck; verify chuck capacity accepts the 3.00 mm shank before seating. Secure the shank fully and confirm runout before starting a cut. Always power down and de-energize the machine spindle before changing tooling. Use appropriate cutting fluid or lubrication when drilling stainless steel or harder alloys to preserve coating life.