Boneham P325HB Press Fit Headless Drill Bushing

Product Description

The BONEHAM P325HB is a press fit headless drill bushing designed to guide cutting tools with precision in jig and fixture applications. Built to industry code P, this bushing features a 0.242 inch inside diameter and a 0.5 inch outside diameter, with an overall length of 0.3125 inches. Manufactured from steel and hardened to 60 to 65 HRC, it delivers the wear resistance required for repeated drilling cycles in production environments. The inside diameter is held to a tight tolerance of plus 0.0001 to plus 0.0004 inches, ensuring consistent hole location and drill alignment. Machinists, tool and die makers, and fixture builders install this type of bushing in precision drill jigs.

This bushing is suited for use in fixed jig plates where a renewable bushing is not required. The headless design allows it to sit flush with or below the jig plate surface, making it appropriate for applications where a headed bushing would interfere with the workpiece or clamping setup. It is a non-renewable, permanent-press installation intended for moderate to high production drilling, reaming, and boring operations across metalworking and fabrication shops.

Key Features

• Press fit installation — no fasteners or locking mechanisms required
• Headless design sits flush with jig plate surface
• Steel construction hardened to 60 to 65 HRC for extended wear life
• Inside diameter tolerance of plus 0.0001 to plus 0.0004 inches for accurate drill guidance
• Conforms to ANSI standards for drill bushing dimensions and tolerances
• Non-renewable, fixed installation for permanent jig setups

Compatibility

Designed as an ANSI-standard press fit headless drill bushing suitable for use in drill jigs and fixtures requiring a P-series bushing with a 0.242 inch bore and 0.5 inch outside diameter.

Installation Notes

Installation is typically performed by a machinist or tool and die maker using an arbor press to drive the bushing into a properly sized jig plate bore. The mating bore in the jig plate must be machined to the correct interference fit to achieve proper retention. Do not hammer the bushing in directly without a press or driver to avoid cocking or damaging the bore. Once pressed in, this bushing is not intended for removal and replacement.