Import 22449 7/16 Inch Hss Jobber Drill Bit Gold Oxide

Product Description

The IMPORT 22449 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and similar materials. It measures 7/16 inch (0.4375 inch decimal) in diameter with an overall length of 5-1/2 inches and a flute length of 4-1/16 inches. The bit is manufactured from high speed steel with a gold oxide finish that provides mild lubricity and corrosion resistance during cutting operations. A 118-degree split point reduces walking on entry and requires no center punch on most surfaces. The straight-cylindrical shank at 3/8 inch diameter fits standard three-jaw drill chucks. This bit is sold individually and is suited for use by machinists, pipefitters, electricians, and general trade technicians.

The IMPORT 22449 is appropriate for production and maintenance drilling tasks in residential and light commercial trade environments. Typical applications include drilling pilot holes for conduit fittings, pipe hangers, structural anchors, and sheet metal brackets. The regular spiral flute and tapered web with web thinning promote chip evacuation and reduce thrust in hand-held and drill-press setups alike. It is rated as a general-purpose grade bit suited to intermittent and moderate-duty use.

Key Features

• 7/16 inch diameter with 0.4375 inch decimal equivalent for precise bit selection
• 118-degree split point minimizes walking and reduces the need for center punching
• Gold oxide coating provides mild lubricity and light corrosion resistance
• Web-thinned tapered web reduces cutting thrust and improves chip clearance
• Right-hand spiral flute with regular helix for efficient chip evacuation
• Straight-cylindrical 3/8 inch shank fits standard drill chucks without adapters

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard three-jaw drill chuck accepting a 3/8 inch straight shank, including hand drills, drill presses, and magnetic base drills commonly used in trade work.

Installation Notes

Secure the shank fully in the drill chuck and tighten with a chuck key before drilling. Use appropriate cutting fluid when drilling ferrous metals to extend bit life and reduce heat buildup. Ensure workpieces are clamped or secured before beginning any drilling operation. Inspect the cutting edges for wear or chipping before each use and replace bits that show signs of dulling to maintain cut quality and operator safety.