Boneham H4828LA Press Fit Headed Drill Bushing Type H

Product Description

The BONEHAM H4828LA is a Type H press fit headed drill bushing designed to guide cutting tools with precise repeatability in jig and fixture applications. Machined from steel and hardened to 60 to 65 HRC, this bushing resists wear under continuous drilling operations. The headed design seats against the jig plate surface, preventing axial migration during use. With an inside diameter of 15/32 inches and a body outside diameter of 3/4 inches, it accepts standard drill shanks and fits correspondingly sized liner bushings or jig plate bores. Installation is permanent — once pressed in, the bushing is not intended for removal or replacement.

This bushing is suited for production drilling, reaming, and boring fixtures in metalworking and fabrication shops. It is commonly installed in hardened jig plates used in repetitive-hole operations on steel, aluminum, and similar workpiece materials. The Type H designation follows ANSI standards, making it interchangeable within compliant tooling setups. Machinists, tool-and-die makers, and fixture builders working in job shops or production environments will specify this bushing where a permanent, headed guide is required.

Key Features

• Press fit installation — permanently locks into jig plate bore without fasteners
• Headed design provides a positive shoulder stop against the jig plate surface
• Steel construction hardened to 60 to 65 HRC for extended wear life under high-cycle drilling
• Inside diameter tolerance of +0.0001 to +0.0005 inches maintains accurate tool guidance
• Conforms to ANSI standards for Type H drill bushing geometry
• Non-renewable — intended as a fixed, long-service installation

Compatibility

Designed as an ANSI-compliant Type H press fit headed drill bushing for use in standard jig plates and fixture assemblies requiring a 3/4 inches body outside diameter bore.

Installation Notes

Installation is performed by a machinist or tool-and-die maker using an arbor press or hydraulic press. The receiving bore in the jig plate must be machined to the appropriate interference fit tolerance before pressing. Never drive the bushing in with a hammer, as this can damage the bore or distort the bushing ID. Verify bore diameter and surface finish before pressing to ensure concentricity and proper seating under the head.