Precision Twist Drill 5996806 Drill Bit 7/16 Inch Hss

Product Description

The PRECISION TWIST DRILL 5996806 is a jobber-length, high speed steel drill bit designed for general-purpose drilling in metal and hard materials. It measures 7/16 inch (0.4375 inch) in diameter with a 5.5-inch overall length and a 4.0625-inch flute length. The 135-degree split point reduces walking on entry and cuts efficiently without a center punch in most setups. A parabolic spiral flute and web-thinned tip help evacuate chips and reduce thrust, making this bit well-suited for production drilling and field metalwork. The straight-cylindrical shank fits standard drill chucks without adapters.

This bit is rated for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It falls within the QC21P series from Precision Twist Drill and carries an ANSI specification designation. The bright, uncoated finish keeps the surface in its as-ground state, which is appropriate for general-purpose use across a range of base metals. Machinists, maintenance technicians, pipefitters, and HVAC fabricators will find this bit useful for hole-making in structural members, sheet metal, and mechanical assemblies where a standard jobber-length reach is sufficient.

Key Features

• 7/16 inch (0.4375 inch) diameter with matching straight-cylindrical shank for secure chuck grip
• 135-degree split point reduces entry walking and lowers required thrust force
• Parabolic spiral flute promotes efficient chip evacuation during deep cuts
• Web-thinned, tapered web construction reduces cutting resistance
• Rated for steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium
• ANSI-specification compliant, heavy-duty drill bit grade

Compatibility

Designed as a general-purpose jobber-length replacement for 7/16 inch HSS drill bits in any standard three-jaw chuck or drill press chuck that accepts straight-cylindrical shanks.

Installation Notes

Installation is performed by a machinist or skilled tradesperson using a standard keyed or keyless drill chuck on a drill press, hand drill, or similar power tool. Secure the workpiece before drilling and use appropriate cutting fluid when drilling stainless steel, superalloys, or titanium to extend bit life. Do not exceed the rated flute length of 4.0625 inches as the maximum drilling depth. Follow applicable shop safety procedures and wear eye protection during all drilling operations.