Boneham H326IH Press Fit Headed Drill Bushing

Product Description

The BONEHAM H326IH is a Type H press fit headed drill bushing designed to guide cutting tools with precision during drilling, reaming, and boring operations. Manufactured from steel with a hardness rating of 60 to 65 HRC, this bushing provides a durable wear surface that maintains accurate hole location under repeated tooling cycles. The inside diameter is 0.302 inches with a tight tolerance of +0.0001 to +0.0005 inches, ensuring consistent tool guidance. The head style seats flush against the jig plate, providing a positive stop and preventing the bushing from being pushed through the plate during use. This part is installed by machinists and toolmakers working with drill jigs and fixtures in production or maintenance environments.

This bushing is suited for press fit installation in drill jig plates used in metalworking, fabrication, and production machining applications. The headed design is typically used where the bushing must be retained from backing out during the drilling cycle. With a body outside diameter of 0.5 inches and a length under head of 0.375 inches, it fits standard jig plate bores designed for Type H headed bushings. The non-renewable design means the bushing is pressed in permanently and is not intended for routine field replacement.

Key Features

• Inside diameter of 0.302 inches (Letter size N) with tolerance of +0.0001 to +0.0005 inches for precise tool guidance
• Steel construction hardened to 60 to 65 HRC for extended wear life
• Headed design provides positive seating against jig plate surface
• Press fit installation method for permanent, secure retention in the jig bore
• Non-renewable, fixed bushing design suited for high-production fixtures
• Meets ANSI standards for drill bushing dimensions and tolerances

Compatibility

Designed as an OEM-style replacement or original-fit component for drill jigs and fixtures requiring a Type H press fit headed drill bushing with a 0.302-inch inside diameter and 0.5-inch body outside diameter, per ANSI standards.

Installation Notes

Press fit bushings should be installed by a machinist or toolmaker using an arbor press to avoid damage to the bore or bushing head. The receiving jig plate bore must be machined to the correct tolerance to achieve proper press fit interference. Do not strike the bushing directly with a hammer. Once pressed in, this non-renewable bushing is not designed for removal and reinstallation.