Cleveland C11685 Jobber Drill Bit No. 31 Hss 135 Deg

Product Description

The CLEVELAND C11685 is a jobber-length drill bit sized at No. 31 wire gauge (0.1200 inches diameter), built from heavy-duty high-speed steel with a bright uncoated finish. The 135-degree split point reduces walking on entry and requires less thrust than a conventional 118-degree point, making it well-suited for production drilling in aluminum and similar non-ferrous materials. The bit features a regular spiral flute, a straight-cylindrical shank at 0.1200 inches diameter, and an overall length of 2.75 inches. Diameter tolerance is held to -0.0005 to 0.0000 inches, consistent with NAS 907 Type B requirements. This bit is installed by machinists, maintenance technicians, and trade professionals working with drill presses, CNC equipment, or portable drills.

The C11685 is designed for right-hand cutting in applications where close-tolerance hole sizing is required. Its primary workpiece material rating is aluminum, though the HSS construction is appropriate for other non-ferrous and soft ferrous materials at appropriate speeds and feeds. The web-thinned, tapered web design reduces cutting resistance and improves chip evacuation in deeper hole applications. It is packaged individually and sold in multiples of 12, making it practical for shop stocking or toolroom inventory.

Key Features

• No. 31 wire size, 0.1200-inch diameter with tolerance of -0.0005 to 0.0000 inches
• 135-degree split point with web thinning for reduced entry thrust and improved accuracy
• Heavy-duty high-speed steel construction, bright uncoated finish
• Regular spiral, 2-flute design with 1.625-inch flute length for efficient chip removal
• Straight-cylindrical shank fits standard drill chucks without adapters
• Meets NAS 907 Type B specification, Series 2222

Compatibility

Designed as an NAS 907 Type B jobber-length drill bit for use in standard drill chucks accepting a 0.1200-inch straight-cylindrical shank, suitable for drill presses, CNC drilling centers, and hand-held portable drills rated for this shank size.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with drill press or CNC tooling procedures. Ensure the drill chuck is clean and fully tightened before operation, and confirm the workpiece is securely clamped. Power down and de-energize the machine before changing tooling. Follow applicable shop safety standards and manufacturer-recommended speeds and feeds for the workpiece material being drilled.