Boneham LT3616IM Headless L Drill Bushing Liner 5/16 in

Product Description

The BONEHAM LT3616IM is a headless L-type drill bushing liner designed to guide drill bits with precision in production drilling and jig-boring applications. It features a 5/16 inch inside diameter, a 9/16 inch body outside diameter, and a 1 inch overall liner length. Manufactured from alloy steel with a hardness rating of 60-65 HRC, this bushing liner delivers the wear resistance required for repetitive drilling cycles. Installation is accomplished via press fit, seating the liner permanently into a jig plate or fixture body. Toolmakers, machinists, and fixture builders working in manufacturing and fabrication environments are the primary installers of this component.

The LT3616IM liner is suited for use in drill jigs and tooling fixtures where a renewable or slip-type bushing will be mounted inside it. The headless L-series design keeps the liner flush or below the jig plate surface, making it appropriate for close-tolerance work where a headed bushing would interfere with workpiece contact. Typical applications include production-volume drilling operations in metal fabrication shops, machine shops, and assembly tooling environments where consistent hole location is critical.

Key Features

• 5/16 inch inside diameter accommodates standard drill bit and slip bushing shanks of that size
• Alloy steel construction hardened to 60-65 HRC for extended service life under repeated tooling contact
• Press fit installation method provides permanent, secure seating in jig plates and fixture bodies
• Headless L-series profile allows flush or sub-flush installation where clearance is limited
• 1 inch liner length provides adequate guidance depth for standard drilling applications
• Liner Industry Code L — compatible with standard L-type renewable bushing systems

Compatibility

Designed as a standard L-series headless drill bushing liner for use with compatible L-type renewable slip bushings in production drill jigs and tooling fixtures.

Installation Notes

Press fit installation requires a hydraulic or arbor press sized appropriately for the bushing outside diameter and jig plate thickness. Ensure the receiving bore in the jig plate is machined to the correct press fit tolerance before installation. Never drive the liner in with an impact tool, as this can damage the bore geometry or distort the liner. Once pressed into position, verify the liner is fully seated and flush to the required depth before mounting tooling.