Boneham LT286HG Headless L Drill Bushing Liner 1/4 in

Product Description

The BONEHAM LT286HG is a headless L-series drill bushing liner designed to guide drill bits with precision in fixed jig applications. It has a 1/4-inch inside diameter, a 7/16-inch body outside diameter, and a 3/8-inch liner length. Manufactured from alloy steel and hardened to 60-65 HRC, this liner resists wear under repeated drilling cycles. It installs via press fit into a standard jig plate or master bushing, holding position without a head flange. Machinists, tool-and-die technicians, and precision fabricators use this component to maintain accurate hole location across production runs.

This bushing liner is suited for use in drill jig fixtures where a flush, headless profile is required. The L-series designation indicates a liner-type bushing intended to be used inside a master bushing or directly pressed into a jig plate. Its compact 3/8-inch length fits applications with limited plate thickness. This part is appropriate for general metalworking, tooling, and machining environments in both job-shop and production settings.

Key Features

• 1/4-inch inside diameter for standard drill bit guidance
• 7/16-inch body outside diameter for press-fit seating in master bushings or jig plates
• 3/8-inch liner length suits thin jig plate applications
• Alloy steel construction hardened to 60-65 HRC for extended wear life
• Headless L-series profile provides a flush fit with no protruding flange
• Press fit installation method secures the liner without additional fasteners

Compatibility

Designed as an OEM-style replacement or standard component for L-series headless drill bushing liner applications in drill jig fixtures requiring a 1/4-inch inside diameter and 7/16-inch outside diameter press-fit liner.

Installation Notes

Press fit installation requires a drill press or arbor press to seat the liner without damaging the bore or the liner ID. Ensure the receiving hole in the jig plate or master bushing meets the specified interference fit tolerance before pressing. Do not hammer the liner in directly without a driver or pressing sleeve, as this can distort the ID. Follow applicable shop safety practices and de-burr the receiving bore prior to installation.