Boneham H488LP Press Fit Headed Drill Bushing Type H

Product Description

The BONEHAM H488LP is a press fit headed drill bushing conforming to Type H industry standards. It is designed to guide drill bits and reamers with precision in jig and fixture applications. The bushing features a 33/64 inch inside diameter and a 3/4 inch body outside diameter, with a 1/2 inch length under the head. Constructed from steel and hardened to 60 to 65 HRC, the H488LP delivers consistent bore alignment and wear resistance in production drilling operations. Machinists and tooling specialists install this bushing by pressing it directly into a drill jig plate without the need for a lock or liner bushing.

The H488LP is suited for use in drill jigs, fixtures, and tooling plates in metalworking and manufacturing environments. It is appropriate for both prototype and production runs where repeatable hole location accuracy is required. The headed design seats flush against the jig plate face, providing a positive stop during installation. This bushing is a non-renewable type, meaning it is pressed permanently into the jig plate rather than designed for routine field replacement.

Key Features

• Press fit installation — no liner bushing or lock required
• Type H headed design provides positive seating against the jig plate face
• Inside diameter tolerance of +0.0001 to +0.0005 inches for precise drill guidance
• Hardness of 60 to 65 HRC for extended wear life in high-cycle drilling
• ANSI standard compliant construction
• Steel construction for durability in metalworking environments

Compatibility

Designed as an OEM-style Type H press fit headed drill bushing for use in standard drill jig plates and tooling fixtures conforming to ANSI bushing specifications.

Installation Notes

Installation is performed by a machinist or tooling technician using an arbor press or hydraulic press to seat the bushing into a prepared hole in the jig plate. The receiving hole must be machined to the correct press fit tolerance to ensure proper retention and bore alignment. Ensure the jig plate and bushing bore are free of chips and debris before pressing. This is a permanent installation — the bushing is not designed for removal and reuse once seated.