Import BDNA--20910-1 7/32 in Mechanics Drill Bit Hss

Product Description

The IMPORT BDNA--20910-1 is a mechanics-length drill bit designed for drilling into ferrous metals and alloy steels in maintenance, repair, and fabrication settings. Built from high speed steel with an oxide finish, it measures 7/32 inch (0.2188 inch decimal) in diameter with a 3.25-inch overall length and a 2-inch spiral flute. The 135-degree split point reduces walking on contact and lowers thrust requirements compared to a standard 118-degree point. Right-hand cut with a straight cylindrical shank, it seats directly in standard three-jaw drill chucks without adapters. General-purpose performance rating makes it suited for intermittent production and job-site drilling tasks.

This bit is intended for use on carbon steel, cast iron, high alloy steel, high tensile strength alloy, and stainless steel workpieces. The mechanics length designation means a shorter overall length than a jobber bit, providing added rigidity in confined spaces or when drilling through heavier stock. Typical applications include HVAC bracket fabrication, equipment repair, panel punching, and general metalworking where a compact, stiff bit is preferred over a longer jobber-length option. Sold individually.

Key Features

• 135-degree split point reduces drill walk and cutting thrust on hard metals
• High speed steel construction withstands elevated cutting temperatures
• Oxide finish provides light corrosion resistance and reduced friction
• Mechanics length (3.25 inches overall) delivers greater rigidity than jobber-length bits
• Web-thinned parallel web design improves chip evacuation in deep holes
• Right-hand spiral flute, straight cylindrical shank fits standard drill chucks

Compatibility

Designed as a general-purpose replacement or stock mechanics-length drill bit compatible with standard three-jaw drill chucks accepting straight cylindrical shanks; suitable for use on carbon steel, cast iron, high alloy steel, high tensile strength alloy, and stainless steel workpieces.

Installation Notes

Install and operate this bit using a corded or cordless drill or drill press; secure the straight cylindrical shank firmly in the chuck before use. Disengage all power sources and confirm the workpiece is clamped before beginning drilling operations. Apply appropriate cutting fluid when drilling stainless steel or high alloy materials to extend bit life and maintain dimensional accuracy. Inspect the cutting edges before each use and replace if chipping or dulling is observed.