Boneham P484JR Press Fit Headless Drill Bushing

Product Description

The BONEHAM P484JR is a headless, press fit drill bushing designed to guide drill bits and other cutting tools with precision in jig and fixture applications. Manufactured from steel, this bushing features a 0.377 inch inside diameter and a 3/4 inch outside diameter, with an overall length of 1/4 inch. The tight inside diameter tolerance of +0.0001 to +0.0005 inches ensures accurate tool guidance and repeatable hole location across production runs. It is installed without a retaining head, keeping a low profile in the workpiece or jig plate. Machinists, toolmakers, and fixture builders rely on this type of bushing to maintain positional accuracy during drilling operations.

This bushing is suited for use in drill jigs, fixture plates, and production tooling where consistent hole placement is required. The press fit installation method means the bushing is driven or pressed directly into a prepared hole in the jig body, creating a secure, permanent fit without additional fasteners. It is a non-renewable bushing, meaning it is intended for fixed, long-term installation rather than periodic replacement. Typical applications include metalworking, fabrication shops, and precision machining environments.

Key Features

• Inside diameter of 0.377 inches with tolerance of +0.0001 to +0.0005 inches for precise tool guidance
• Body outside diameter of 3/4 inches for a secure press fit in jig plates
• Overall bushing length of 1/4 inch for low-profile, compact fixture designs
• Headless design sits flush with the jig surface, reducing interference with workpieces
• Steel construction provides durability and wear resistance in production environments
• Non-renewable, permanent installation press fit type — no locking collar or head required

Compatibility

Designed as an OEM-style replacement or direct-fit component for standard P-series headless press fit drill bushing applications in metalworking jigs and fixtures.

Installation Notes

Installation is performed by pressing the bushing into a precisely reamed or bored hole in the jig plate using an arbor press or similar press equipment. The receiving hole should be sized to the bushing outside diameter specification to achieve the correct interference fit. Power down all associated machinery before installing or removing bushings from active tooling fixtures. Consult applicable shop safety standards and fixture design guidelines before installation.