Boneham H4016IM Press Fit Headed Drill Bushing Steel

Product Description

The BONEHAM H4016IM is a Type H press fit headed drill bushing used to guide twist drills, reamers, and other cutting tools with precision in jig and fixture applications. It features a 5/16 inch (0.3125 inch) inside diameter, a 5/8 inch body outside diameter, and a 1 inch length under the head. Manufactured from steel and hardened to 60-65 HRC, this bushing maintains consistent hole location and resists wear under repeated drilling cycles. The headed design provides a positive shoulder that seats against the jig plate surface, preventing the bushing from being pushed through during operation.

This bushing is intended for permanent installation in drill jigs, fixtures, and tooling plates where the same hole location is drilled repeatedly. It is suited for machine shops, tool rooms, and production environments where tight positional tolerances must be maintained. Typical users include machinists, tool and die makers, and fixture builders working with metalworking, woodworking, or composite drilling operations. The press fit installation method means the bushing is driven or pressed into the jig plate bore and is not designed for removal or interchangeable service.

Key Features

• Type H headed design seats flush against jig plate surface to prevent axial movement during drilling
• Inside diameter tolerance of +0.0001 to +0.0005 inch ensures accurate tool guidance and repeatable hole location
• Hardness of 60 to 65 HRC provides long service life under high-cycle drilling conditions
• Steel construction withstands the heat and abrasion generated by cutting tool contact
• Press fit installation — no additional locking hardware required
• Meets ANSI standards for drill bushing dimensions and tolerances

Compatibility

Designed as an OEM-style permanent press fit drill bushing for use in standard drill jig plates and fixture bodies machined to accept a 5/8 inch body outside diameter bushing bore.

Installation Notes

Installation is performed by a machinist or toolmaker 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 the bushing in place. Ensure the jig plate and bushing are clean and free of burrs or debris before pressing. Because this is a permanent press fit bushing, it is not intended to be removed once installed — proper bore preparation is critical to avoid damage.