Cleveland C70371 Jobber Drill Bit Set 29 Pc Hss Split Point

Product Description

The CLEVELAND C70371 is a 29-piece jobber length drill bit set designed for heavy-duty metalworking and multipurpose drilling applications. Built from high-speed steel (HSS) with a bright, uncoated finish, these bits cover a size range from 1/16 inch to 1/2 inch in 1/64-inch step increments. The 135-degree split-point tip reduces walking on entry and lowers the thrust force required to start a hole, making them well suited for production drilling in metal. Straight shanks fit standard drill chucks without adaptation. All 29 bits are organized in a metal or plastic index case for quick size selection on the job. This set meets NAS 907 specification requirements.

This set is built for metalworking environments where a full fractional range is needed in a single kit. Typical applications include drilling mild steel, aluminum, and other common metals in mechanical, HVAC, plumbing, and electrical trade work. The jobber length geometry balances reach and rigidity for general-purpose through-hole and clearance-hole drilling. A right-hand cutting direction means standard chuck rotation applies. The compact indexed case keeps the set organized in a van, shop, or toolroom.

Key Features

• 29-piece fractional set covering 1/16 inch to 1/2 inch in 1/64-inch increments
• 135-degree split-point tip reduces walking and lowers entry thrust
• High-speed steel construction rated for heavy-duty metalworking
• Bright, uncoated finish suitable for use with cutting fluid on ferrous and non-ferrous metals
• Straight shank fits standard 3-jaw drill chucks without a reducer
• Meets NAS 907 specification designation for dimensional conformance
• Metal or plastic indexed storage case included for organized access

Compatibility

Designed as a general-purpose fractional jobber drill bit set for use in standard straight-shank drill chucks; compatible with corded and cordless drills, drill presses, and mill spindles accepting straight-shank tooling up to 1/2 inch capacity.

Installation Notes

Installation and use should be performed by qualified machinists, pipefitters, electricians, or other trade professionals familiar with rotating cutting tools. Secure the workpiece before drilling and confirm the chuck is tightened fully before engaging the spindle. Use appropriate cutting fluid when drilling ferrous metals to extend tool life and improve cut quality. Follow applicable OSHA and shop safety standards for eye protection and machine guarding when operating drill presses or power drills.