Boneham SF4822JR Slip-fixed Drill Bushing 0.377 in Id

Product Description

The BONEHAM SF4822JR is a slip-fixed drill bushing designed to guide cutting tools with precision during drilling, reaming, and boring operations. Built to ANSI standards, this steel bushing features a 0.377 inch inside diameter (Letter V) and a 0.75 inch body outside diameter, making it a direct fit for standard SF-series jig tooling setups. The hardened steel construction is rated 60 to 65 HRC, providing wear resistance suited to high-cycle production and toolroom environments. It includes a head and is compatible with the LS-1 lock screw for secure retention in the liner bushing. Machinists, tool and die makers, and fixture builders are the primary installers of this component.

This bushing is used in drill jigs and fixture plates where repeatable hole location is critical. The slip-fixed design allows the bushing to be installed and locked in place through a head-style body that seats against the jig plate surface. With a 1.375 inch length under the head and a head outside diameter of approximately 1.047 inches (1-3/64 inches), it suits moderate plate thicknesses common in production machining fixtures. It is renewable, meaning it can be replaced without retooling the fixture liner, reducing downtime in high-volume drilling operations.

Key Features

• ANSI-standard SF-series slip-fixed bushing for use with standard liner bushings
• 0.377 inch (Letter V) inside diameter with a tight tolerance of +0.0001 to +0.0005 inches for precise tool guidance
• Hardened steel construction rated 60 to 65 HRC for extended service life
• Head-style body with 1.375 inch length under head for secure seating in jig plates
• Compatible with LS-1 lock screw for positive retention during operation
• Renewable design allows in-place replacement without modifying the fixture

Compatibility

Designed for use with ANSI-standard SF-series liner bushings and LS-1 lock screws in drill jig and fixture applications.

Installation Notes

Installation is typically performed by a machinist or tool and die maker during fixture assembly or bushing replacement. Power down and lock out any associated machine before servicing a drill jig. Press or hand-seat the bushing into the compatible liner bushing, then secure with the LS-1 lock screw to prevent rotation during drilling. Inspect the inside diameter for burrs or contamination before installation to maintain tool guidance accuracy.