Precision Twist Drill 5997500 1/16 Inch Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 5997500 is a jobber-length high-speed steel (HSS) drill bit designed for general-purpose drilling in steel, cast iron, and similar materials. The bit features a 118-degree standard point angle and a steam oxide finish that provides a measure of lubricity and corrosion resistance during operation. With a 1/16 inch diameter and an overall length of 1.875 inches, this is a small-diameter bit suited for precision holes in tight locations. The regular spiral flute and tapered web configuration promote efficient chip evacuation, and the web-thinned tip reduces the thrust required to start the cut. Licensed tradespeople and maintenance professionals working in HVAC, plumbing, and electrical applications install this type of bit routinely.

The 5997500 is built for general-purpose production and maintenance drilling. It performs in steel and cast iron workpieces and is appropriate for use in both shop and field settings. The straight shank fits standard drill chucks without adapters. The Series R10A-R15A-R18A designation identifies the product family within the PRECISION TWIST DRILL lineup. The 7/8 inch flute length supports drilling up to 0.875 inches deep before chip packing becomes a concern, making this bit practical for thin stock, sheet metal, and enclosure work common in trade service calls.

Key Features

• 118-degree standard point angle for general-purpose entry in steel and cast iron
• HSS construction with steam oxide finish for added lubricity and surface protection
• Web-thinned tip with tapered web reduces cutting thrust on small-diameter entry
• Regular spiral flute with 14xD flute-to-diameter ratio for efficient chip removal
• Straight shank fits standard chucks without adapters
• Conforms to ANSI standards and NAS 907 specification

Compatibility

Designed as a general-purpose jobber-length drill bit for use in steel, cast iron, and similar workpiece materials conforming to material codes P, M, K, N, and S per the Series R10A-R15A-R18A product family.

Installation Notes

Install in a standard drill chuck and verify the shank is fully seated and the chuck is tightened before drilling. Disengage power completely before changing bits. For small-diameter bits like this one, use low feed pressure to avoid deflection or breakage. Follow applicable workplace safety standards and wear appropriate eye protection during all drilling operations.