Boneham P488JQ Press Fit Headless Drill Bushing 3/8 in

Product Description

The BONEHAM P488JQ is a press fit headless drill bushing used to guide cutting tools during precision drilling, reaming, and boring operations. Manufactured from steel hardened to 60 to 65 HRC, this bushing delivers consistent hole location accuracy in jigs and fixtures. It features a 3/8 inch inside diameter, a 3/4 inch outside diameter, and an overall length of 1/2 inch. The headless design allows flush or sub-flush seating in the jig plate without a protruding flange. Machinists, toolmakers, and fixture builders install this type of bushing in production and job-shop environments where tight positional tolerances are required.

This bushing is suited for use in drill jig plates across a range of metalworking and fabrication applications. Its press fit installation method makes it appropriate for permanent or semi-permanent fixture setups where the bushing is not intended to be routinely replaced. The inside diameter tolerance of +0.0001 to +0.0005 inches provides the close fit required to maintain drill or reamer guidance without excessive tool wobble. Typical users include machine shops, tooling departments, and precision fabrication facilities working to ANSI standards.

Key Features

• Press fit installation for permanent fixture mounting without fasteners
• Headless design seats flush in jig plate for unobstructed tool travel
• Steel construction hardened to 60 to 65 HRC for wear resistance
• Inside diameter tolerance of +0.0001 to +0.0005 inches for precise tool guidance
• Meets ANSI standards for drill bushing geometry and fit
• Non-renewable bushing intended for long-service permanent installations

Compatibility

Designed as an OEM-style replacement or direct-fit bushing for drill jigs and fixtures requiring a press fit headless style bushing with a 3/8 inch inside diameter and 3/4 inch outside diameter per ANSI P-series specifications.

Installation Notes

Press fit bushings are installed by toolmakers or machinist personnel using an arbor press or hydraulic press to achieve the required interference fit in the jig plate bore. The jig plate bore must be machined to the correct tolerance to accept the bushing without damage to the bushing or the plate. Never drive the bushing in with impact tools, as this can distort the inside diameter and compromise tool guidance. Verify inside diameter after installation to confirm tolerance has been maintained.