Value Collection 20831 Mechanics Drill Bit 0.12 in Hss

Product Description

The VALUE COLLECTION 20831 is a mechanics-length, high-speed steel (HSS) twist drill bit designed for general-purpose drilling in metalworking applications. It measures 0.12 inches in diameter with a 2.75-inch overall length and a 1.6875-inch flute length. The 135-degree split point geometry reduces walking and cutting torque at entry, making it well suited for production and maintenance drilling in ferrous materials. The oxide finish provides light corrosion resistance during storage and use. This bit is a standard tool for machinists, maintenance mechanics, and fabricators working with drills, drill presses, and CNC setups.

This bit is rated for right-hand cutting in a range of ferrous workpiece materials including carbon steel, cast iron, high alloy steel, high tensile strength alloys, stainless steel, and general steel stock. The mechanics length, shorter than a jobber bit, improves rigidity in tight spaces and reduces deflection when drilling at depth, making it a practical choice for machine tool work and bench-top drilling operations where stub-length is too short and jobber-length introduces too much flex.

Key Features

• 135-degree split point reduces bit walking and lowers thrust required at entry
• High-speed steel construction handles moderate heat buildup during continuous drilling cycles
• Mechanics length (2.75 inches OAL) provides a balance of rigidity and reach
• Oxide finish offers light corrosion protection during storage
• Straight cylindrical shank fits standard drill chucks without modification
• Web-thinned, parallel web design reduces cutting resistance in ferrous materials

Compatibility

Designed for use in carbon steel, cast iron, high alloy steel, high tensile strength alloys, stainless steel, and general steel workpieces. Fits any standard drill chuck accepting a straight cylindrical shank in this diameter range.

Installation Notes

Install the shank fully into the drill chuck and tighten securely before operation. Secure the workpiece firmly in a vise or fixture before drilling. Use appropriate cutting fluid when drilling stainless or high-alloy materials to extend tool life and manage heat. Inspect the cutting edges before each use and replace bits showing signs of chipping or dullness to maintain hole quality and avoid workpiece damage.