Cleveland C70141 Jobber Drill Bit Size 8 Cobalt 135 Deg

Product Description

The CLEVELAND C70141 is a jobber-length twist drill bit designed for precision hole-making in metalworking and fabrication applications. Built from M42 cobalt high-speed steel with a gold oxide coating, this bit delivers extended tool life under high-heat cutting conditions. It measures 0.1990 inches in diameter (wire size 8) with an overall length of 3-5/8 inches and a flute length of 2-7/16 inches. The 135-degree split point reduces walking on entry and requires less feed force compared to a standard 118-degree point. This bit is sized for use in drill presses, CNC machinery, or hand-held power tools by machinists, maintenance technicians, and metalworking professionals.

This bit is rated for aluminum as its primary workpiece material and is well suited to drilling non-ferrous metals, softer steels, and composite materials where a cobalt grade provides a performance edge over standard HSS. The Series 2213 designation and NAS 907 Type J specification make it appropriate for aerospace-adjacent and precision manufacturing environments where dimensional and material standards are required. The straight-cylindrical shank with a diameter of 0.1990 inches fits standard drill chucks without reduction sleeves or adapters.

Key Features

• M42 cobalt steel construction for heat and wear resistance in demanding cutting applications
• 135-degree split point reduces drill walk and lowers entry thrust force
• Gold oxide coating provides lubricity and additional surface hardness
• Web-thinned, tapered web configuration improves chip evacuation during drilling
• Meets NAS 907 Type J specification for use in precision and aerospace-grade work
• Regular spiral flute geometry with right-hand cut for standard drilling operations

Compatibility

Designed as a direct-fit jobber-length drill bit for use in standard 3-jaw drill chucks and collet systems accepting a 0.1990-inch straight-cylindrical shank. Suitable for drill presses, hand-held power drills, and CNC drilling operations calling for a wire size 8 or 0.1990-inch diameter bit.

Installation Notes

Installation is performed by machinists and metalworking technicians. Secure the shank fully in the chuck and verify concentricity before operation. Always wear appropriate eye protection and secure the workpiece before drilling. Consult machine manufacturer guidelines for recommended speeds and feeds when drilling aluminum or other non-ferrous materials with cobalt bits.