Boneham H266GQ Press Fit Headed Drill Bushing Type H

Product Description

The BONEHAM H266GQ is a Type H press fit headed drill bushing designed to guide drill bits and other cutting tools with precision in jig and fixture applications. Constructed from steel, it features an inside diameter of 0.221 inches with a tight tolerance of +0.0001 to +0.0004 inches, making it suitable for close-tolerance drilling operations. The head design keeps the bushing positively located against the jig plate face. This bushing is a permanent, non-renewable installation intended for high-volume production fixtures where consistent hole placement is critical. Machinists and toolmakers are the primary installers.

This drill bushing is used in drill jig plates for production machining environments, both in job shops and manufacturing facilities. It is pressed directly into a prepared hole in the jig body and is not intended for removal or replacement after installation. The headed configuration prevents the bushing from being driven through the jig plate during drilling operations, making it well suited for applications where thrust loads are a concern.

Key Features

• Press fit installation for permanent, fixed positioning in jig plates
• Inside diameter of 0.221 inches with tolerance of +0.0001 to +0.0004 inches for precise tool guidance
• Head outside diameter of 1/2 inch seats flush against jig plate surface to resist axial thrust
• Steel construction provides hardness and wear resistance for repeated drill passes
• Non-renewable design suited for permanent fixture builds
• Length under head of 3/8 inches accommodates standard jig plate thicknesses

Compatibility

Designed as an OEM-style replacement or direct-fit component for Type H press fit headed drill bushing applications in standard drill jig and fixture assemblies.

Installation Notes

Installation requires pressing the bushing into a precisely reamed hole in the jig plate using an arbor press or hydraulic press — never hammer directly on the head flange. The receiving hole in the jig must be sized to the correct press fit tolerance for steel-to-steel interference to ensure the bushing does not rotate or pull out during use. Once pressed in, this bushing is not designed for removal. Always verify inside diameter clearance matches the drill or tool shank before committing to production runs.