Value Collection 20916 Mechanics Drill Bit 5/16 in Hss

Product Description

The VALUE COLLECTION 20916 is a 5/16-inch mechanics-length drill bit designed for general-purpose drilling in metal and ferrous materials. Built from high-speed steel (HSS) with an oxide finish, it features a 135-degree split point that reduces walking on contact and cuts without a center punch in most applications. The Weldon flat shank with three flats resists slipping in chuck collets under torque. At 4 inches overall length with a 2.5-inch flute, this bit suits confined drilling scenarios typical in mechanical and fabrication work. It is intended for installation and service professionals working with drill presses or hand-held power tools.

This bit is rated for use on carbon steel, cast iron, high alloy steel, high tensile strength alloys, stainless steel, and general steel stock. The mechanics-length body — shorter than a jobber bit — improves rigidity and reduces deflection when drilling through structural members, brackets, or assemblies where hole precision matters. The right-hand spiral flute clears chips efficiently during through-hole and blind-hole operations. It is commonly used by HVAC technicians, pipefitters, electricians, and general mechanical trades for field and shop drilling tasks.

Key Features

• 135-degree split point starts on contact and reduces drill walking without center punching
• High-speed steel construction handles ferrous metals including stainless steel and cast iron
• Weldon flat shank with three flats locks securely in compatible collet chucks
• Mechanics-length body (4 inches OAL) improves rigidity and reduces deflection versus jobber-length bits
• Oxide coating provides corrosion resistance and light lubrication during cutting
• Web-thinned parallel web reduces thrust force required during drilling

Compatibility

Designed as a general-purpose mechanics-length drill bit compatible with Weldon flat collet chucks and drill presses accepting 5/16-inch Weldon shank tooling. Suitable for use on carbon steel, cast iron, high alloy steel, high tensile strength alloys, stainless steel, and general steel workpieces.

Installation Notes

Secure the Weldon shank fully in the collet chuck and tighten all flat-engaging set screws before operation. Use appropriate cutting fluid or lubricant when drilling stainless steel or high alloy materials to extend bit life and reduce heat buildup. Inspect the cutting edges before each use — HSS bits used on hard alloys can show edge wear that is not always visible without close examination. Follow shop safety practices including eye protection and secure workpiece fixturing at all times.