Boneham H488LR Press Fit Headed Drill Bushing

Product Description

The BONEHAM H488LR is a Type H press fit headed drill bushing designed to guide drill bits with precision in jig and fixture applications. It features a 17/32-inch inside diameter and a 3/4-inch body outside diameter, with a 1/2-inch length under the head. Constructed from steel hardened to 60 to 65 HRC, this bushing delivers consistent bore alignment and long service life under repeated drilling cycles. It is a permanent, non-renewable installation intended for production or tooling setups where a fixed guide is required.

This bushing is suited for use in drill jigs, fixtures, and tooling plates in metalworking and machining environments. It is installed by press fit directly into a prepared hole in the jig plate, making it appropriate for applications where the bushing will remain in place for the life of the tool. Machinists, toolmakers, and fixture builders working in production shops, job shops, or manufacturing facilities are the primary installers. The head style seats flush against the jig plate face, preventing the bushing from being pushed through during drilling operations.

Key Features

• Type H headed press fit bushing per ANSI standards
• Inside diameter of 17/32 inches with a tight tolerance of +0.0001 to +0.0005 inches for accurate drill guidance
• Body outside diameter of 3/4 inches and head outside diameter of 59/64 inches
• Head height of 7/32 inches provides positive seating against jig plate surface
• Steel construction hardened to 60 to 65 HRC for wear resistance in high-cycle drilling
• Non-renewable design for permanent fixture installations

Compatibility

Designed as an ANSI-compliant Type H press fit headed drill bushing for use in standard drill jig plates and tooling fixtures with a prepared 3/4-inch body bore.

Installation Notes

Installation is performed by toolmakers or machinists using a press to drive the bushing into a precisely reamed jig plate hole. The receiving hole must be machined to the correct interference fit tolerance before pressing to avoid damage to the bushing or plate. Do not use impact tools or hammers directly on the bushing head. Always verify inside diameter clearance against the intended drill bit or tool shank before installation.