Boneham L6412NC Headless L Drill Bushing Liner 3/4 in

Product Description

The BONEHAM L6412NC is a headless L-type drill bushing liner designed to guide drill bits with precision in fixed jig applications. It features a 3/4-inch inside diameter, a 1-inch body outside diameter, and a 3/4-inch liner length. Constructed from alloy steel and heat-treated to a hardness of 60-65 HRC, this liner resists wear under repeated drilling cycles. Installation is press fit, seating the bushing securely into a jig plate without a locking head. Machinists, toolmakers, and fixture builders rely on this liner to maintain hole location accuracy across production runs.

This liner is suited for use in drill jigs where a flush, headless profile is required. The press fit design is appropriate for permanent or semi-permanent bushing installations in steel or cast jig plates. It is commonly used in production machining environments where consistent hole placement is critical across multiple workpieces. The L-series designation indicates a standard liner that accepts a renewable slip or fixed bushing on the inside diameter.

Key Features

• 3/4-inch inside diameter for precise drill guidance
• 1-inch body outside diameter for secure press fit seating
• 3/4-inch liner length suits standard jig plate thicknesses
• Alloy steel construction with 60-65 HRC hardness for extended wear life
• Headless design provides a flush surface profile in the jig plate
• Press fit installation eliminates need for external locking hardware

Compatibility

Designed as an OEM-style replacement or new-installation liner for standard L-series drill jig bushing applications where a 3/4-inch ID headless press fit liner is specified.

Installation Notes

Installation is performed by machinists or toolmakers using a drill press or arbor press to seat the liner flush into a precision-bored jig plate hole. Power down any machinery in the work area before pressing the bushing into place. Confirm the bore diameter and surface finish of the jig plate meet manufacturer tolerances for press fit retention before installation. Do not hammer the liner directly without a proper driver to avoid damaging the bore or liner face.