Boneham SF488JW Slip-fixed Drill Bushing 0.386 in Id Steel

Product Description

The BONEHAM SF488JW is a slip-fixed drill bushing designed to guide cutting tools with precision in jig and fixture applications. Built to the SF industry code, it features a 0.386 inch inside diameter (Letter W), a 0.75 inch body outside diameter, and a 0.5 inch length under the head. Hardened to 60 to 65 HRC, this steel bushing maintains tight inside diameter tolerances of plus 0.0001 to plus 0.0005 inches, ensuring repeatable hole location accuracy across production runs. It is renewable and compatible with LS-1 lock screws for secure retention in the liner bushing.

Slip-fixed bushings are used in drill jigs where a bushing must be locked in place during the operation but can be removed and replaced without disturbing the jig plate. The SF488JW suits metalworking and fabrication fixtures in tool rooms, job shops, and manufacturing environments. Its headed design and renewable construction make it appropriate for applications requiring periodic bushing replacement due to tool wear, while the ANSI-standard dimensions allow integration into standard jig plates and liner bushings already in use.

Key Features

• SF slip-fixed bushing design allows removal and replacement without jig plate modification
• Inside diameter: 0.386 inches (Letter W) with tolerance of plus 0.0001 to plus 0.0005 inches
• Body outside diameter: 0.75 inches; length under head: 0.5 inches
• Hardened steel construction at 60 to 65 HRC for wear resistance under repeated tool guidance
• Headed style with 1.047 inch head outside diameter and 0.25 inch head height
• LS-1 lock screw compatible; renewable bushing design

Compatibility

Designed as an ANSI-standard slip-fixed drill bushing for use with LS-1 compatible lock screws and standard liner bushings in drill jig and fixture assemblies.

Installation Notes

Installation is typically performed by tool and die makers or machinist-level personnel during jig setup or bushing replacement. Ensure the liner bushing and jig plate bore are clean and free of chips before seating the SF488JW. Use the appropriate LS-1 lock screw to secure the bushing and prevent rotation during drilling operations. Never hammer the bushing into a liner with an undersized bore, as this can damage the precision ground ID.