Boneham P4812IW Headless Drill Bushing 0.332 in Id 3/4 in Od

Product Description

The BONEHAM P4812IW is a press fit headless drill bushing designed to guide cutting tools with precision during drilling, reaming, and boring operations. Built to Industry Code P, this bushing features a 0.332 inch inside diameter, a 3/4 inch body outside diameter, and a 3/4 inch overall length. Constructed from steel and hardened to 60 to 65 HRC, it delivers the wear resistance and dimensional stability required for repeat-use jig and fixture applications in machine shops and production environments. The headless design sits flush with the jig plate for clearance-sensitive setups.

This bushing is suited for use in drill jigs, fixture plates, and tooling setups where consistent hole location is critical. It is pressed directly into a prepared jig plate bore without a locking collar or head, making it appropriate for fixed, non-renewable installations. Machinists, tool and die makers, and production fixture builders typically install this style of bushing in applications where the bushing is not expected to be removed and replaced during the service life of the fixture.

Key Features

• Press fit installation method for permanent, fixed positioning in jig plates
• Industry Code P designation for standardized interchangeability
• 0.332 inch inside diameter with a tight tolerance of plus 0.0001 to plus 0.0005 inches for accurate tool guidance
• Hardened steel construction at 60 to 65 HRC for long service life under repeated drilling cycles
• Headless design allows flush seating with the jig plate surface
• Meets ANSI standards for drill bushing dimensions and tolerances

Compatibility

Designed as an ANSI-standard press fit headless drill bushing for use in drill jigs and fixture plates requiring a 3/4 inch bore and 0.332 inch tool guide diameter.

Installation Notes

Installation is performed by machinists or toolmakers using a press or arbor press to drive the bushing into a precision-bored receiver hole in the jig plate. The receiver bore should be prepared to the appropriate interference fit tolerance per ANSI guidelines before pressing. Do not hammer the bushing in directly without a driver to avoid distorting the inside diameter. Because this is a non-renewable bushing, the jig plate bore should be inspected for proper sizing before installation, as removal typically damages the bushing or the plate.