Boneham SF8812MX Slip-fixed Drill Bushing 23/32 in Steel

Product Description

The BONEHAM SF8812MX is a slip-fixed drill bushing designed for precise drill guidance in jig and fixture tooling applications. Built to ANSI standards, this SF-series bushing features a 23/32-inch inside diameter with a tight tolerance of +0.0001 to +0.0005 inches, a 1-3/8-inch body outside diameter, and a 1-3/4-inch length under the head. Constructed from hardened steel at 60 to 65 HRC, it provides the wear resistance and dimensional stability required for repetitive drilling operations. The head-type design keeps the bushing positively located in the jig plate, and it is renewable for extended fixture service life.

This bushing is suited for use in drill jig fixtures across metalworking, fabrication, and precision machining environments. The slip-fixed installation method allows the bushing to be installed in a fixed liner bushing and removed without special tools, making it appropriate for production runs where tooling changeover is required. It is compatible with an LS-2 lock screw, which secures the bushing in position during drilling operations. Typical installers include tool and die makers, machinist tradespeople, and fixture builders working in job shop or production settings.

Key Features

• Slip-fixed installation method for use with fixed liner bushings and LS-2 lock screw
• Inside diameter tolerance of +0.0001 to +0.0005 inches for accurate drill guidance
• Hardened steel construction at 60 to 65 HRC for high wear resistance
• Head-type design with 1-51/64-inch head outside diameter and 3/8-inch head height
• Renewable bushing — replaceable without replacing the liner for extended fixture life
• Meets ANSI standards for drill bushing dimensions and tolerances

Compatibility

Compatible with LS-2 lock screws. Designed as an ANSI-standard SF-series slip-fixed renewable drill bushing for use in fixed liner bushings in drill jig fixtures.

Installation Notes

Installation and replacement of drill bushings is typically performed by tool and die makers or machinists. Ensure the mating liner bushing bore is clean and free of chips or burrs before inserting the SF8812MX. Secure the bushing with a compatible LS-2 lock screw before operating drilling equipment. Do not hammer the bushing into a bore that is undersized for a slip-fixed installation, as this may damage the head or alter the inside diameter tolerance.