Boneham L3222IM Headless L Drill Bushing Liner 5/16 in Id

Product Description

The BONEHAM L3222IM is a headless L-style drill bushing liner designed to guide drill bits with precision in jig and fixture applications. With a 5/16-inch inside diameter and a 1/2-inch body outside diameter, this liner seats into a master bushing or directly into a drill jig plate via press fit. Constructed from alloy steel, it delivers the hardness and wear resistance required for repetitive drilling operations in production machining environments. The 1-3/8-inch liner length provides stable bit support across a range of material thicknesses. Machinists, tool-and-die makers, and production floor technicians rely on this type of component to maintain hole location accuracy across high-cycle drilling runs.

This liner is suited for use in drill jigs where a headless, flush-mount profile is required. The L designation indicates this is a liner-type bushing intended to work within a compatible master bushing installed in the jig plate. It is appropriate for light- to medium-duty drilling operations in metalworking, fabrication, and assembly fixture applications. The press fit installation method makes it a fixed-position component once seated, with no external locking hardware required.

Key Features

• 5/16-inch inside diameter for precise drill bit guidance
• 1/2-inch body outside diameter for standard master bushing or jig plate fit
• 1-3/8-inch liner length for stable, consistent bit support
• Alloy steel construction for hardness and long service life under repetitive use
• Headless L-style profile for flush, low-profile installation
• Press fit installation — no additional locking hardware required

Compatibility

Designed as an OEM-style replacement or new-build component for drill jig and fixture assemblies requiring a headless L-series liner bushing with a 5/16-inch inside diameter and 1/2-inch outside diameter.

Installation Notes

Installation is performed by pressing the liner into a prepared master bushing or jig plate bore using an arbor press or hydraulic press — do not hammer directly on the bushing face. Verify bore diameter and surface finish in the receiving hole before installation to ensure proper press fit interference. Consult applicable shop standards and jig design tolerances before final seating. Remove all chips and debris from the bore before pressing the liner into position.