Import 20928 Mechanics Drill Bit 1/2 Inch Hss Weldon

Product Description

The IMPORT 20928 is a mechanics-length drill bit designed for controlled, accurate drilling in dense ferrous materials. Built from high-speed steel (HSS) with an oxide finish, this bit features a 135-degree split point that reduces walking on contact and requires no center punch on most surfaces. The Weldon flat shank with three flats provides a positive, slip-resistant grip in compatible chucks. At 5 inches overall length with a 3-3/8 inch flute, it is sized for close-quarters work where standard-length bits are impractical. Right-hand cut with a regular spiral flute and parallel web configuration for consistent chip evacuation.

This drill bit is suited for production and maintenance drilling in carbon steel, cast iron, high alloy steel, high tensile strength alloy, stainless steel, and general steel workpieces. It is a general-purpose mechanics bit appropriate for use by machinists, pipefitters, ironworkers, and mechanical contractors who need a compact, rigid bit for tight-clearance drilling applications on structural members, pipe flanges, brackets, and similar metal components. The web-thinned geometry reduces thrust load when driving through harder stock.

Key Features

• 135-degree split point reduces bit walk and improves starting accuracy without a center punch
• High-speed steel construction handles carbon steel, cast iron, stainless steel, and high alloy steel
• Weldon flat shank with 3 flats prevents rotation and slippage in compatible drill chucks
• Oxide finish provides mild lubricity and corrosion resistance during use
• Web-thinned, parallel web design reduces drilling thrust and heat buildup
• Mechanics length (5 inches OAL) suits confined-space and close-clearance drilling

Compatibility

Designed as a general-purpose mechanics-length drill bit for use in Weldon flat shank-compatible drill chucks and holders; suitable for drilling carbon steel, cast iron, high alloy steel, high tensile strength alloy, stainless steel, and general steel workpieces.

Installation Notes

Install the bit securely in a Weldon flat-compatible chuck, ensuring all three flats are properly engaged before applying torque. Always wear appropriate eye protection and secure the workpiece before drilling. Use cutting fluid when drilling stainless steel or high alloy materials to extend bit life and manage heat. Inspect the cutting edges for wear before each use and replace the bit if the point shows signs of chipping or dulling.