Precision Twist Drill 5995683 Drill Bit Set 115 Pc

Product Description

The PRECISION TWIST DRILL 5995683 is a 115-piece jobber length drill bit set covering wire gauge sizes 60 through 1, letter sizes A through Z, and fractional inch sizes from 1/16 to 1/2 inch in 1/64-inch step increments. Each bit is manufactured from high speed steel with an oxide finish for improved lubricity and surface hardness during general-purpose metalworking. The 118-degree standard point angle is the industry baseline for drilling into steel, aluminum, cast iron, and similar materials. All bits feature a straight shank and conform to ANSI specifications. The set ships in a metal storage case and is sized for use by machinists, pipefitters, electricians, HVAC technicians, and other trade professionals who need a full fractional, letter, and wire gauge index on the job.

This set is suited for metalworking and multipurpose drilling applications in both residential and commercial settings. The wide size range makes it a practical bench set for fabrication shops, maintenance facilities, service vans, and job-site tool cribs. Wire gauge sizes 60 through 1 cover small precision holes common in electrical and instrumentation work, while fractional sizes up to 1/2 inch handle typical structural and mechanical fastener clearance requirements. Series R10, R15, and R18 bits are included within the 115-piece index.

Key Features

• 115-piece index covers fractional (1/16 to 1/2 inch), wire gauge (60 to 1), and letter (A to Z) sizes in a single set
• High speed steel construction provides durability across a wide range of ferrous and non-ferrous metals
• Oxide coating reduces friction and helps resist corrosion during storage and use
• 118-degree standard split-point angle suitable for general-purpose metalworking and multipurpose drilling
• Straight shank compatible with standard keyed and keyless drill chucks
• Metal storage case keeps bits organized and indexed for fast size selection
• ANSI specification compliance ensures consistent geometry and dimensional accuracy

Compatibility

Designed as a general-purpose jobber length drill bit set for use with standard drill presses, hand drills, and drill motors accepting straight shank bits up to 1/2 inch. Suitable for metalworking and multipurpose applications per the manufacturer specification designation.

Installation Notes

Install bits fully into the chuck and tighten securely before operation to prevent slippage or runout. Ensure the drill press or hand drill is powered off and unplugged before changing bits. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend bit life and improve hole quality. Inspect bits for chipping or wear before each use and replace any damaged bits to maintain safe, accurate drilling.