Precision Twist Drill 5997147 19/64 in Hss Jobber Drill

Product Description

The PRECISION TWIST DRILL 5997147 is a high speed steel jobber-length drill bit designed for general-purpose drilling in metal fabrication, maintenance, and light manufacturing environments. Built to ANSI standards, it features a 135-degree split-point geometry with web thinning, which reduces walking on entry and lowers the thrust required to start a hole without a center punch. The straight cylindrical shank measures 19/64 inch in diameter, and the overall length is 4.375 inches. Two regular spiral flutes evacuate chips efficiently across the full 3.0625-inch flute length. Licensed HVAC, plumbing, and electrical tradespeople commonly carry jobber bits of this size for sheet metal and structural penetrations.

This drill bit is suited for right-hand drilling operations on steel, aluminum, and other non-ferrous materials. The bright, uncoated finish makes it a cost-effective option for general shop use where coating-specific heat resistance is not required. The QC21P series targets everyday drilling tasks where a reliable, standard-geometry bit is needed. It ships individually and is also available in quantity for tool crib stocking.

Key Features

• 135-degree split point with web thinning for self-centering entry and reduced thrust
• High speed steel construction suitable for steel, aluminum, and non-ferrous workpieces
• Bright/uncoated finish for general-purpose shop and field use
• Regular spiral flute geometry promotes consistent chip evacuation
• Straight cylindrical shank fits standard drill chucks without adapters
• Meets ANSI specification for dimensional consistency

Compatibility

Designed as a general-purpose jobber drill bit compatible with standard three-jaw drill chucks accepting a 19/64 inch straight shank. Suitable for use on drill presses, hand drills, and right-angle drills common in HVAC, plumbing, and electrical trade applications.

Installation Notes

Install and remove drill bits only when the drill or drill press is fully powered off and the chuck has stopped rotating. Secure the workpiece before drilling to prevent rotation or shifting during the cut. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend bit life and improve hole quality. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.