Import -20928-5 Mechanics Drill Bit 1/2 in Hss Split Point

Product Description

The IMPORT -20928-5 is a mechanics-length drill bit designed for general-purpose drilling in metal and ferrous materials. It features a 1/2-inch diameter with a 135-degree split point geometry and a web-thinned tip that reduces walking and lowers thrust requirements at the start of a cut. The bit is manufactured from high-speed steel with an oxide finish and uses a Weldon flat shank with three flats for positive tool holding in compatible chucks and drill motors. Overall length is 5 inches with a flute length of 3-3/8 inches. Right-hand cut with a regular spiral flute. This bit is suited for production or maintenance use by machinists, pipefitters, ironworkers, and mechanical contractors.

This drill bit is rated for general-purpose use in carbon steel, cast iron, high alloy steel, high tensile strength alloy, stainless steel, and standard steel workpieces. The shorter mechanics length provides added rigidity compared to jobber-length bits, making it a practical choice in confined machine setups or when drilling through heavier stock where deflection is a concern. Sold individually with a minimum order quantity of 5 units.

Key Features

• 1/2-inch diameter with 135-degree split point for reduced thrust and self-centering starts
• Web-thinned parallel web for improved chip evacuation and cutting efficiency
• High-speed steel construction with oxide coating for wear resistance
• Weldon flat shank with three flats for secure tool holding
• Mechanics length at 5 inches overall for added rigidity over jobber-length alternatives
• Right-hand cut with regular spiral flute geometry

Compatibility

Designed for use with drill presses, milling machines, and handheld drill motors equipped with chucks or tool holders that accept a 1/2-inch Weldon flat shank. Suitable for drilling carbon steel, cast iron, high alloy steel, stainless steel, and similar ferrous materials.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or trade professionals familiar with metal-cutting operations. Ensure the drill motor or press is de-energized and the workpiece is securely clamped before bit changes. Confirm the chuck or holder is rated for the Weldon flat shank diameter before use. Always operate within the recommended speed range for the workpiece material and bit diameter to prevent premature wear or breakage.