Boneham SF3212HD Slip-fixed Drill Bushing Steel

Product Description

The BONEHAM SF3212HD is a slip-fixed drill bushing designed for use in jig and fixture applications that require accurate, repeatable hole location guidance. Built to ANSI standards, this SF-series bushing features a 0.246 inch inside diameter (letter size D), a 0.5 inch body outside diameter, and a 0.75 inch length under head. Constructed from hardened steel with a surface hardness of 60 to 65 HRC, it delivers the wear resistance required for production drilling environments. The headed design and renewable construction make it straightforward to replace without retooling the fixture plate.

This bushing is intended for use in slip-fixed jig bushing applications where the bushing is retained by a lock screw rather than a press fit. It is compatible with the LS-1 lock screw, which secures the bushing in a liner or master bushing during drilling operations. Typical applications include metalworking production fixtures, assembly jigs, and tooling setups in machining environments. The SF-series configuration is commonly used when quick bushing changes between operations are needed. Hardened steel construction holds up under repeated drilling cycles without significant bore wear.

Key Features

• ANSI-standard SF-series slip-fixed configuration for repeatable hole guidance
• 0.246 inch (letter D) inside diameter with a tight tolerance of plus 0.0001 to plus 0.0004 inches
• Hardened steel construction rated 60 to 65 HRC for extended wear life
• 0.75 inch length under head suits moderate-depth fixture applications
• Renewable design allows bushing replacement without disturbing the liner
• LS-1 lock screw compatible for secure retention during operation

Compatibility

Designed for use with LS-1 lock screws in ANSI-standard slip-fixed jig bushing systems. Fits liners or master bushings sized to accept a 0.5 inch body outside diameter SF-series bushing per ANSI specifications.

Installation Notes

Installation is performed by tooling or fixture specialists familiar with jig bushing systems. Ensure the mating liner or master bushing bore is clean and free of burrs before seating the bushing. Secure with the appropriate LS-1 lock screw torqued to fixture manufacturer specifications. Do not press-fit a slip-fixed bushing — it is designed for tool-free removal and replacement during production runs.