Boneham H485KV Press Fit Headed Drill Bushing

Product Description

The BONEHAM H485KV is a Type H press fit headed drill bushing used to guide drill bits and reamers with precision during machining and fabrication operations. The bushing features a 29/64 inch inside diameter and a 3/4 inch body outside diameter, with a head outside diameter of 59/64 inch and a 7/32 inch head height. Constructed from steel, it is pressed directly into a jig plate or fixture to establish consistent hole location and maintain positional accuracy across repeated drilling cycles. It is a non-renewable design, meaning it is installed once and remains fixed in the tooling plate for the life of the fixture.

This bushing is intended for use in drill jig fixtures across manufacturing, metalworking, and tool-and-die applications. It is suited for production environments where repeatable hole placement is required without the need for bushing changeout between operations. The 5/16 inch length under the head allows for use in standard-thickness jig plates. Machinists, toolmakers, and fixture builders are the primary users of this component.

Key Features

• Press fit installation method for permanent, fixed placement in jig plates
• Type H industry-standard bushing code for straightforward specification and sourcing
• 29/64 inch inside diameter with a tight tolerance of +0.0001 to +0.0005 inch for accurate drill guidance
• Steel construction provides hardness and wear resistance suitable for production drilling
• Headed design with 59/64 inch head outside diameter and 7/32 inch head height to seat flush against the jig surface
• Non-renewable, non-counterbored design for straightforward fixture assembly

Compatibility

Designed as an OEM-style replacement or direct-fit component for standard Type H press fit drill jig fixtures requiring a 29/64 inch inside diameter and 3/4 inch body outside diameter bushing.

Installation Notes

Press fit bushings are typically installed by toolmakers or machinists using an arbor press or hydraulic press to seat the bushing squarely into a properly sized, reamed hole in the jig plate. The receiving hole in the plate must be machined to the correct interference fit tolerance before pressing. Do not hammer the bushing in with direct impact, as this may damage the head or alter alignment. Once installed, this bushing is not intended for removal or replacement.