Precision Twist Drill 5996908 Jobber Drill Bit 3.5mm Hss

Product Description

The PRECISION TWIST DRILL 5996908 is a jobber-length drill bit designed for general-purpose drilling in a wide range of materials. Built from high-speed steel with a bright uncoated finish, the bit features a 135-degree split point that reduces walking on contact and lowers the thrust required to start a hole. The parabolic flute geometry improves chip evacuation during deeper passes, keeping the cutting edge clear and reducing heat buildup. At 3.5 mm (0.1378 inches) in diameter with a 2-3/4 inch overall length, it fits standard drill chucks and is sized for precision work in metalworking, fabrication, and maintenance applications.

This bit is suited for drilling into steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. The straight cylindrical shank allows seating in any standard keyed or keyless chuck. The web-thinned, tapered web design reduces cutting resistance in tougher alloys. It is a practical choice for machinists, maintenance technicians, pipefitters, and fabricators working in shop or field environments where a reliable general-duty HSS bit is needed. The QC21PM series is manufactured to DIN 338 standards, ensuring consistent dimensional accuracy across the production run.

Key Features

• 3.5 mm (0.1378 inches) diameter with a straight cylindrical shank of matching diameter
• 135-degree split point reduces wandering and lowers entry thrust on hard materials
• Parabolic spiral flutes promote efficient chip removal during deep drilling passes
• Web-thinned, tapered web lowers cutting resistance in stainless steel and superalloys
• High-speed steel construction rated for drilling steel, cast iron, non-ferrous metals, and titanium-based alloys
• Conforms to DIN 338 specification for jobber-length drill geometry and tolerances

Compatibility

Designed as an OEM-style general-purpose jobber-length drill bit suitable for standard drill chucks accepting straight cylindrical shanks. Compatible workpiece materials include steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium as specified by the manufacturer.

Installation Notes

Install in a keyed or keyless drill chuck and tighten securely before use. Always wear appropriate eye protection and secure the workpiece before drilling. Reduce feed pressure when breaking through the far side of a workpiece to prevent bit grab or workpiece movement. For extended use in hard materials, apply cutting fluid to the flutes to manage heat and extend edge life.