Precision Twist Drill 5996934 Jobber Drill 8.50mm Hss

Product Description

The PRECISION TWIST DRILL 5996934 is a high speed steel (HSS) jobber-length drill bit with an 8.50 mm (0.3346 inch) diameter and a 135-degree split point angle. Manufactured to DIN 338 standards, it features a web-thinned, tapered web construction that reduces thrust and improves centering at the start of a cut. The bright, uncoated finish suits general-purpose drilling in steel, aluminum, and other non-ferrous materials. With an overall length of 4.6094 inches and a 2.9531-inch flute length, this bit is a standard stock item for professional machinists, pipefitters, and maintenance technicians.

Designed for general-purpose drilling applications, the 5996934 is suited for use in production shops, field service, and maintenance environments. It performs in ferrous and non-ferrous workpiece materials including steel and aluminum, covering ISO material groups P, M, K, N, and S. The straight cylindrical shank fits standard drill chucks on benchtop drill presses, hand drills, and magnetic base drills. It ships individually and is appropriate for single-task or low-volume use where a premium coated bit is not required.

Key Features

• 8.50 mm diameter with 135-degree standard split point for accurate starting without a center punch in many applications
• High speed steel construction provides toughness across a wide range of workpiece materials
• Web-thinned tapered web reduces drilling thrust and heat buildup
• Regular spiral, 2-flute design efficiently clears chips during through-hole and blind-hole drilling
• Straight cylindrical shank (8.5 mm) fits standard 3-jaw drill chucks without adapters
• Manufactured to DIN 338 specification for consistent dimensional accuracy

Compatibility

Designed as a general-purpose jobber drill for use in any standard drill chuck accepting an 8.50 mm straight shank. Suitable for drilling steel, aluminum, and non-ferrous materials per ISO workpiece material groups P, M, K, N, and S.

Installation Notes

Install and remove drill bits only with the drill or press powered off and the chuck key removed from the chuck. Secure the workpiece firmly in a vise or fixture before drilling to prevent rotation and injury. Use cutting fluid or coolant when drilling steel to extend tool life, even though this bit does not support internal coolant delivery. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point is damaged.