Import BDNA--22450-1 Jobber Length Drill Bit 29/64 in Hss

Product Description

The IMPORT BDNA--22450-1 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and composite materials. It measures 29/64 inch (0.4531 inch decimal) in diameter with a 5-5/8 inch overall length and a 4-3/16 inch flute length. The bit is manufactured from high speed steel and finished with a gold oxide coating that reduces friction and helps extend tool life. A 118-degree split point tip allows the bit to start on contact without walking, reducing the need for a center punch on most surfaces. The straight-cylindrical shank measures 1/2 inch in diameter for secure chuck engagement. Web thinning with a tapered web configuration lowers thrust requirements and improves chip evacuation during drilling.

This bit is suited for maintenance, fabrication, and trade service applications where a reliable general-purpose drill bit is needed. The right-hand spiral flute geometry is compatible with standard drill presses, hand drills, and magnetic base drills. Typical users include HVAC technicians, plumbers, electricians, and sheet metal workers drilling clearance holes, pilot holes, and through-holes in ferrous and non-ferrous materials. The 29/64 inch diameter is commonly used for bolt clearance and anchor preparation in light structural and mechanical applications.

Key Features

• 29/64 inch (0.4531 inch) diameter with 118-degree split point for self-starting cuts
• High speed steel construction suitable for drilling steel, aluminum, and plastics
• Gold oxide finish reduces friction and provides light corrosion resistance
• Web-thinned tapered web reduces thrust and improves chip flow
• Right-hand spiral flute with regular helix for consistent chip evacuation
• Straight-cylindrical 1/2 inch shank fits standard drill chucks

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with standard 1/2 inch or larger keyed and keyless drill chucks on hand drills, drill presses, and magnetic base drills.

Installation Notes

Secure the shank fully in the drill chuck before operating and confirm the chuck is tightened on all flats. Use appropriate cutting fluid or lubricant when drilling ferrous metals to reduce heat buildup and prolong cutting edge life. Wear appropriate eye protection and secure the workpiece before drilling. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point is damaged.