Precision Twist Drill 5997086 1/16 in Hss Jobber Drill

Product Description

The PRECISION TWIST DRILL 5997086 is a 1/16 inch diameter high speed steel jobber drill bit designed for general-purpose drilling in metalworking and light fabrication applications. It features a 135-degree split-point geometry with web thinning to reduce walking and improve bite on flat and curved surfaces. The bright, uncoated finish preserves the base HSS hardness without added thermal treatment, making it suited for low-to-moderate speed drilling where coolant is not required. With a 7/8 inch flute length and 1-7/8 inch overall length, this bit fits standard drill chucks and is used by machinists, pipefitters, HVAC technicians, and maintenance tradespeople alike.

This jobber-length drill bit is sized for drilling small-diameter holes in steel, aluminum, and other non-ferrous materials. The regular spiral flute and straight cylindrical shank make it compatible with both handheld drills and drill press setups. It is part of the QC21P series, which is a general-purpose line built to ANSI standards. Typical use cases include pilot holes, sheet metal work, and component drilling in residential and light commercial service environments.

Key Features

• 135-degree point angle with web thinning for improved centering and reduced thrust
• High speed steel construction for general-purpose use across steel and non-ferrous metals
• Bright, uncoated finish for straightforward regrinding and reuse
• Regular spiral flute design promotes chip evacuation in standard drilling conditions
• Straight cylindrical shank fits standard three-jaw drill chucks
• Built to ANSI specification for consistent dimensional tolerancing

Compatibility

Designed as a general-purpose jobber drill bit for use in standard drill presses, hand drills, and drill drivers accepting a 1/16 inch straight shank. Suitable for primary workpiece materials including steel, aluminum, and non-ferrous alloys per the QC21P series design intent.

Installation Notes

Install and remove drill bits only when the drill or drill press is fully powered off and the chuck is stationary. Secure the workpiece firmly before drilling to prevent rotation or shifting. Use appropriate eye protection and follow applicable OSHA standards for rotating tool operation. Inspect the cutting edges before use and replace or regrind the bit if chipping or excessive wear is visible.