Boneham SF325HL Slip-fixed Drill Bushing 0.261 in Id Steel

Product Description

The BONEHAM SF325HL is a slip-fixed drill bushing designed to guide cutting tools with precision during drilling, reaming, and boring operations. Built to the SF industry standard, it features a 0.261 inch inside diameter (Letter G), a 0.500 inch body outside diameter, and a 5/16 inch length under the head. The bushing is machined from steel and held in place with an LS-1 compatible lock screw, making it a renewable component that can be removed and replaced without disturbing the jig plate. Recommended for applications where tool changes during a single setup are required.

This slip-fixed bushing is intended for use in drill jigs and fixture plates across toolroom, production machining, and metalworking environments. The head-style design seats against the jig plate surface for positive axial location. The renewable construction makes it well suited for high-cycle production work where bushings must be swapped between operations. It accepts LS-1 lock screws, which must be sourced separately to secure the bushing in a liner or headless press-fit bushing installed in the jig plate.

Key Features

• SF slip-fixed bushing: renewable and removable during setup without jig disassembly
• 0.261 inch (Letter G) inside diameter with a tight tolerance of +0.0001 to +0.0005 inches for consistent tool guidance
• 0.500 inch body outside diameter and 51/64 inch head outside diameter for positive seating
• 5/16 inch length under head suits standard jig plate thicknesses
• Steel construction for wear resistance in repetitive drilling applications
• LS-1 lock screw compatible — not counterbored

Compatibility

Designed as an OEM-style renewable slip-fixed drill bushing conforming to SF industry standards and compatible with LS-1 lock screws. Fits standard liner bushings sized for a 0.500 inch body outside diameter.

Installation Notes

Installation is performed by toolmakers or machining setup personnel. The bushing slips into a compatible liner bushing already pressed into the jig plate and is locked in position with a separately sourced LS-1 lock screw. Always verify that the liner bushing bore and the SF325HL body outside diameter are clean and free of burrs before installation. Remove the bushing before replacing cutting tools when the liner is not designed for through-tool clearance.