Boneham H204EQ Press Fit Headed Drill Bushing 0.152 in Id

Product Description

The BONEHAM H204EQ is a Type H press fit headed drill bushing used to guide cutting tools accurately through jigs and fixtures in machining operations. It features a 0.152 inch inside diameter, a 5/16 inch body outside diameter, and a 1/4 inch length under the head. The head outside diameter measures 27/64 inch and the head height is 1/8 inch. Constructed from steel, this bushing is installed via press fit into a drill jig plate and is not designed to be renewable or replaceable after installation. It is suited for applications requiring precise, repeatable hole location across production runs.

This bushing is used in metalworking, tooling, and fixture applications where controlled drill guidance is required. It is appropriate for light-duty to medium-duty jig plate installations in manufacturing environments, toolrooms, and machine shops. The headed design provides a positive stop against the jig plate surface, preventing the bushing from being pushed through during drilling operations.

Key Features

• Type H press fit installation — no locking ring or removal tool required
• 0.152 inch inside diameter with tight tolerance of +0.0001 to +0.0004 inches for accurate tool guidance
• Steel construction for durability in repeated drilling cycles
• Head design provides positive axial stop against jig plate surface
• 1/4 inch length under head suits standard jig plate thicknesses
• Not counterbored — head seats flush on the top face of the jig plate

Compatibility

Designed as an OEM-style replacement or new-installation drill bushing for Type H press fit applications in standard drill jig plates and tooling fixtures.

Installation Notes

Installation is typically performed by a machinist or toolroom technician using an arbor press or similar pressing equipment. The receiving bore in the jig plate must be machined to the appropriate tolerance to accept a press fit bushing. Ensure the jig plate is secured and supported properly before pressing the bushing in to avoid distortion. This bushing is not renewable — once pressed in, it is intended to remain in place for the life of the fixture.