Boneham H135CF Press Fit Headed Drill Bushing

Product Description

The BONEHAM H135CF is a Type H press fit headed drill bushing designed to guide cutting tools accurately through jigs and fixtures during drilling, reaming, and similar machining operations. It features an inside diameter of 5/64 inches, a body outside diameter of 13/64 inches, and a length under head of 5/16 inches. Constructed from steel hardened to 60 to 65 HRC, the bushing resists wear through repeated tool passes. The headed design seats against the jig plate surface, providing positive axial location without additional fasteners. It is a non-renewable, permanently installed component pressed directly into the jig body. Machinists, tool and die makers, and manufacturing engineers specify this bushing where a fixed, tight-tolerance guide is required.

This bushing is suited for production and prototype jig plates in light to medium machining applications. The press fit installation method makes it appropriate for applications where the bushing will not be swapped between operations. It is commonly used in drill jig assemblies across general manufacturing, metalworking, and precision fabrication environments. The inside diameter tolerance of plus 0.0001 to plus 0.0004 inches supports accurate hole location and consistent tool guidance across production runs.

Key Features

• Type H headed design provides positive axial seating against the jig plate face
• Press fit installation secures the bushing permanently without fasteners
• Steel construction hardened to 60 to 65 HRC for extended wear life
• Inside diameter tolerance of plus 0.0001 to plus 0.0004 inches for precise tool guidance
• Non-renewable configuration suited for fixed, single-operation jig setups
• Meets ANSI standards for drill bushing dimensions and tolerances

Compatibility

Designed as an OEM-style press fit headed drill bushing for use in standard drill jig plates and fixtures requiring a Type H, permanently installed bushing per ANSI specifications.

Installation Notes

Installation is performed by pressing the bushing into a properly sized and finished jig plate bore using an arbor press or hydraulic press. The bore in the jig plate must be machined to the correct interference fit tolerance before pressing to avoid cracking the bushing or distorting the ID. No heat, adhesive, or fasteners are required for a standard press fit installation. Because this is a non-renewable bushing, replacement requires machining out the existing bushing and refurbishing the bore.