Cleveland C70315 Screw Machine Drill Bit Wire 11 Hss

Product Description

The CLEVELAND C70315 is a screw machine length drill bit designed for high-production drilling in metal fabrication, machining, and assembly applications. Built from high-speed steel with a bright, uncoated finish, it features a 135-degree split point that reduces walking and minimizes the need for a center punch on most surfaces. The web-thinned geometry lowers thrust requirements, making it well-suited for drilling in alloy steel and aluminum. At 2.25 inches overall length, the stub-style body provides rigidity and reduces deflection compared to jobber-length bits. This bit is sized to wire gauge 11, with a decimal diameter of 0.1910 inches and a tolerance of +0.0000 to -0.0007 inches, meeting ASME B94.11M standards.

This bit is used in screw machine operations, CNC drilling, drill press work, and hand-drill applications where a shorter, stiffer bit is preferred over jobber length. It is well-matched for drilling alloy steel and aluminum workpieces in manufacturing and maintenance environments. The straight-cylindrical shank seats in standard drill chucks without modification. It conforms to NAS 907 Type C specification, making it appropriate for aerospace-adjacent and precision metalworking applications where dimensional and performance standards are enforced.

Key Features

• Wire size 11 (0.1910 inches decimal) with tight tolerance of +0.0000 to -0.0007 inches
• 135-degree split point reduces walking and cutting force at entry
• Web-thinned, parallel web configuration lowers thrust and improves chip clearance
• Screw machine length (2.25 inches OAL) provides added rigidity versus jobber-length bits
• High-speed steel construction rated for heavy-duty drilling grade
• Meets ASME B94.11M and NAS 907 Type C specifications

Compatibility

Designed as a screw machine length replacement or production drill bit for use in standard drill chucks accepting a 0.1910-inch straight-cylindrical shank. Suitable for drilling alloy steel and aluminum workpieces as specified by the manufacturer.

Installation Notes

Install in a compatible drill chuck and tighten securely before operation. Ensure the workpiece is clamped or fixtured to prevent movement during drilling. Apply cutting fluid appropriate for the workpiece material to extend bit life and maintain hole quality. Inspect the cutting edges before each use and replace the bit if chipping or wear is observed.