Boneham H485LK Press Fit Headed Drill Bushing Type H

Product Description

The BONEHAM H485LK is a Type H press fit headed drill bushing designed to guide cutting tools with precision in jig and fixture applications. Manufactured from steel with a hardness rating of 60 to 65 HRC, this bushing provides durable, wear-resistant tool guidance in high-repetition drilling operations. It features a 0.5 inch inside diameter, a 0.75 inch body outside diameter, and a 5/16 inch length under the head. The headed design provides a positive stop against the jig plate surface, preventing the bushing from being pushed through the plate during use. Machinists, toolmakers, and production engineers working with drill jigs and fixtures are the primary installers of this component.

This bushing is suited for use in drill jig plates in production machining environments, toolrooms, and precision fabrication shops. It is appropriate for applications requiring repeatable hole location accuracy across multiple workpieces. The press fit installation method means the bushing is driven or pressed directly into the jig plate bore without the need for a locking collar or retaining ring, making it a fixed, non-renewable installation. It meets ANSI standards and is sold as a single unit.

Key Features

• Type H headed press fit design provides a positive stop against the jig plate face
• 0.5 inch inside diameter with a tight tolerance of +0.0001 to +0.0005 inches for precise tool guidance
• Steel construction hardened to 60 to 65 HRC for extended wear life in repetitive drilling operations
• Body outside diameter of 0.75 inches and head outside diameter of 59/64 inches
• Head height of 7/32 inches keeps the bushing profile low above the jig plate surface
• Meets ANSI standards for drill bushing dimensions and performance

Compatibility

Designed as an OEM-style fixed replacement for Type H press fit headed drill bushing applications in standard jig plate bores sized for a 0.75 inch body outside diameter.

Installation Notes

Press fit bushings are installed by machinists or toolmakers using an arbor press or hydraulic press to seat the bushing flush into the jig plate bore. Ensure the receiving bore is machined to the correct interference fit tolerance before pressing the bushing in place. The bushing is not renewable once installed and must be pressed out and replaced if the bore or bushing shows wear. Follow standard shop safety practices when operating pressing equipment.