Boneham H488JW Press Fit Headed Drill Bushing

Product Description

The BONEHAM H488JW is a Type H press fit headed drill bushing manufactured from hardened steel for use in precision drilling and machining operations. It features a 0.386 inch inside diameter (Letter W), a 0.75 inch body outside diameter, and a 0.5 inch length under the head. The hardness runs 60 to 65 HRC, making it suitable for high-cycle drill jig applications where dimensional accuracy and wear resistance are required. This is a fixed, non-renewable bushing installed permanently into a jig plate or fixture body. Machinists and toolmakers install this type of bushing in production and inspection fixtures.

The H488JW is designed for use in drill jigs and fixture tooling across general metalworking, fabrication, and precision machining environments. Its press fit installation method locks it permanently into the jig body without additional fasteners. The headed design provides a positive stop against the jig plate surface, controlling the depth seating of the bushing. This makes it appropriate for applications where repeatability and tight positional tolerances are required on drilled hole locations.

Key Features

• Press fit installation for permanent, fixed positioning in drill jig plates
• Headed design (Type H) provides a positive stop against the jig plate surface
• Inside diameter tolerance of +0.0001 to +0.0005 inches for close-fit drill guidance
• Hardness of 60 to 65 HRC for extended wear life in high-cycle applications
• Steel construction meets ANSI standards for drill bushing dimensions
• Non-renewable (fixed) bushing — not intended for field replacement without press

Compatibility

Designed as an ANSI-standard Type H press fit headed drill bushing for use in drill jig plates and fixture bodies requiring a permanently installed bushing with a 0.386 inch bore.

Installation Notes

Installation requires an arbor press or hydraulic press to seat the bushing flush and square into the jig plate bore. The jig plate hole must be machined to the correct interference fit tolerance prior to pressing. Do not hammer the bushing in directly without a press plate or driver to avoid distorting the head or bore. Because this is a non-renewable bushing, removal typically damages the jig plate bore and requires re-machining.