Import 22439 Jobber Drill Bit Letter K 9/32 Inch Hss

Product Description

The IMPORT 22439 is a jobber-length drill bit sized to Letter K (9/32 inch, 0.2812 inch decimal) for general-purpose metal drilling applications. Manufactured from high speed steel with a gold oxide coating, it offers improved lubricity and surface hardness compared to uncoated HSS. The 118-degree split point reduces walking on entry and minimizes the need for a center punch on most materials. At 4-1/4 inches overall length with a 2-15/16 inch flute length, it fits standard drill chucks and is well suited to benchtop drill presses and handheld power drills. Licensed tradespeople and maintenance technicians handling light fabrication, conduit, bracket, or fixture work will find this a reliable general-service option.

This bit is intended for general-purpose drilling in mild steel, aluminum, plastics, and similar materials. The straight cylindrical shank accepts standard three-jaw chucks without adapters. Its regular spiral flute geometry promotes chip evacuation during through-hole drilling. Typical applications include field fabrication, HVAC and electrical rough-in work requiring custom hole sizing, and maintenance drilling where Letter K sizing is specified by a fastener or fitting chart.

Key Features

• Letter K size: 9/32 inch (0.2812 inch decimal) for precise fit-to-spec drilling
• 118-degree split point reduces bit walking and improves penetration on entry
• Gold oxide coating improves surface hardness and reduces friction during cutting
• High speed steel construction handles general-purpose ferrous and non-ferrous materials
• Regular spiral flute with tapered web for efficient chip clearing
• Straight cylindrical 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 9/32-inch straight shank, including benchtop drill presses and handheld power drills.

Installation Notes

Install in a properly tightened three-jaw chuck before operation. Ensure the workpiece is clamped or secured before drilling to prevent rotation and injury. Use appropriate cutting fluid when drilling ferrous metals to extend bit life and improve hole quality. Inspect the cutting edges before each use and replace bits showing signs of chipping or dulling to maintain accuracy and operator safety.