Cleveland C16532 Cobalt Jobber Drill Bit No 30 135 Deg

Product Description

The CLEVELAND C16532 is a cobalt jobber-length drill bit in wire gauge size No. 30, with a decimal diameter of 0.1285 inches. Built from M42 cobalt high-speed steel with a straw (gold oxide) coating, this bit is rated for heavy-duty drilling in steel and other ferrous materials. The 135-degree split point self-centers on contact, reducing the need for a center punch and minimizing walking on hard surfaces. A parabolic flute geometry improves chip evacuation in deep-hole applications. Right-hand cutting direction, two flutes, and a web-thinned tapered web round out the cutting geometry for consistent performance under production conditions.

This bit is suited for metal fabrication, mechanical assembly, HVAC equipment manufacturing, and general industrial drilling where tight-tolerance holes in steel or hard alloys are required. The straight cylindrical shank fits standard three-jaw drill chucks without adapters. At 2.75 inches overall length with a 1.625-inch flute length, it handles typical jobber-depth drilling tasks on ferrous workpieces in shop or field environments. Licensed trades including HVAC, plumbing, and electrical contractors will find this size useful for conduit knock-out prep, bracket fabrication, and equipment mounting applications.

Key Features

• M42 cobalt steel construction for heat resistance and extended tool life in hard ferrous materials
• 135-degree split point self-centers on contact and reduces entry burr on steel
• Parabolic flute geometry accelerates chip removal in deep or interrupted cuts
• Straw (gold oxide) coating provides lubricity and corrosion resistance during storage and use
• Web-thinned tapered web reduces thrust force and improves cutting efficiency
• Straight cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed as a heavy-duty jobber drill bit for use in standard three-jaw drill chucks accommodating a 0.1285-inch straight shank. Meets ASME B94.11M and DIN 338 standards for jobber-length drill bits.

Installation Notes

Install in a drill press, hand drill, or CNC spindle with a properly sized chuck rated for the shank diameter. Secure the workpiece before drilling and use appropriate cutting fluid or coolant when drilling hardened steel to preserve bit life. This bit does not support coolant-through delivery. Follow applicable shop safety procedures and wear eye protection during all drilling operations.