Boneham H325GQ Press Fit Headed Drill Bushing Type H

Product Description

The BONEHAM H325GQ is a Type H press fit headed drill bushing used to guide drill bits and cutting tools with precision in jig and fixture applications. It features a 0.221 inch inside diameter, a 1/2 inch body outside diameter, and a 5/16 inch length under the head. The head outside diameter measures 39/64 inch with a head height of 7/32 inch. Constructed from steel, this bushing is pressed directly into a drill jig plate and held in place without a locking mechanism. It is a permanent, non-renewable style intended for fixed production setups where the drill size does not change between operations.

This bushing is suited for machining and fabrication environments where consistent hole location and drill guidance are required. It fits into a counterbored or flat-surface jig plate hole sized to accept a 1/2 inch outside diameter body. Typical applications include metalworking production jigs, assembly fixtures, and precision drilling operations in manufacturing shops. Machinists, toolmakers, and jig builders are the primary installers in these settings.

Key Features

• Type H headed press fit design seats flush against the jig plate face for positive axial registration
• 0.221 inch inside diameter with a tight tolerance of plus 0.0001 to plus 0.0004 inch for accurate drill guidance
• Steel construction provides hardness and wear resistance for repeated drilling cycles
• Non-renewable fixed installation eliminates the need for a locking collar or liner bushing
• Head outside diameter of 39/64 inch and head height of 7/32 inch provide positive seating against the jig face
• UNSPSC Code 31171603 for procurement and catalog classification

Compatibility

Designed as an OEM-style press fit headed drill bushing for use in standard drill jig plates and fixtures accepting a 1/2 inch outside diameter body bushing.

Installation Notes

Installation is performed by machinists or toolmakers using an arbor press to drive the bushing into a precision-reamed hole in the jig plate. Ensure the receiving hole is sized and finished to the appropriate tolerance for a press fit before installation. Once pressed in, this bushing is not designed for removal and replacement without risk of damage to the jig plate. Power down all associated machinery before mounting or inspecting jig fixtures.