Boneham SF325GK Slip-fixed Drill Bushing 0.209 in Id

Product Description

The BONEHAM SF325GK is a slip-fixed drill bushing designed to guide cutting tools with precision in jig and fixture applications. Built to industry code SF, this bushing features a 0.209 inch inside diameter and a 0.5 inch body outside diameter, with a head outside diameter of approximately 0.797 inches and a head height of 0.25 inches. The length under head measures 0.3125 inches. Constructed from steel hardened to 60 to 65 HRC, it delivers the wear resistance required for repeated use in production drilling, reaming, and related tooling operations. It is a renewable bushing compatible with LS-1 lock screws and meets ANSI standards.

This bushing is used in drill jigs and modular fixturing systems where repeatable hole location accuracy is critical. Typical applications include metal fabrication shops, machine shops, and production environments requiring consistent tool guidance across multiple workpieces. The slip-fixed design allows the bushing to be installed and locked in a liner bushing already pressed into the jig plate, making it well suited for operations where the bushing must be changed between operations without removing the liner.

Key Features

• Slip-fixed SF design compatible with standard liner bushings and LS-1 lock screws
• 0.209 inch inside diameter with a tight tolerance of plus 0.0001 to plus 0.0004 inches for precise tool guidance
• Steel construction hardened to 60 to 65 HRC for extended service life
• Renewable bushing design allows replacement without disturbing the liner bushing in the jig plate
• Head style for positive axial retention when locked in place
• Conforms to ANSI standards for drill bushing dimensions and tolerances

Compatibility

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

Installation Notes

Installation is typically performed by toolmakers or machinist-level personnel using standard jig setup procedures. Ensure the mating liner bushing is properly pressed and seated in the jig plate before inserting this slip-fixed bushing. Secure the bushing with a compatible LS-1 lock screw torqued per shop standards to prevent rotation during cutting operations. Inspect the bushing bore and mating surfaces for wear or damage before each production run.