Boneham SFT3612IO Slip-fixed Drill Bushing 0.316 in Id

Product Description

The BONEHAM SFT3612IO is a headed slip-fixed drill bushing designed to guide cutting tools with precision in jig and fixture applications. Built from steel, this bushing features an inside diameter of 0.316 inches with a tight tolerance of +0.0001 to +0.0005 inches, a body outside diameter of 0.5625 inches, and a length under head of 0.75 inches. The head measures 0.875 inches in outside diameter and 0.25 inches in height. The slip-fixed installation method allows the bushing to be locked in place using a compatible lock screw, making it a renewable component that can be removed and replaced without disturbing the drill jig plate.

This bushing is used in industrial drill jig setups across metal fabrication, machine shops, and production environments where repeatable hole location accuracy is required. The slip-fixed design suits applications where bushings need to be changed out for different tool sizes or replaced after wear without retooling the fixture plate. Machinists, tool and die makers, and fixture builders install this type of component as part of hardened jig assemblies. The inside diameter letter designation is O, corresponding to the 0.316-inch decimal dimension per standard bushing sizing conventions.

Key Features

• Slip-fixed installation method allows field removal and replacement without fixture plate modification
• Inside diameter of 0.316 inches with precision tolerance of +0.0001 to +0.0005 inches for consistent tool guidance
• Steel construction provides durability in repetitive drilling operations
• Headed design with 0.875-inch head OD and 0.25-inch head height for positive seating against the jig plate surface
• Renewable bushing rated for lock screw compatibility with LS-TW-2 style fasteners
• Counterbored: No — flush or surface-mounted fixture plate installation

Compatibility

Compatible with LS-TW-2 lock screws for secure retention in slip-fixed bushing applications. Designed as an OEM-style slip-fixed drill bushing following standard SF industry sizing conventions for use in hardened drill jig plates.

Installation Notes

Installation and removal should be performed by a qualified machinist or tool and die maker using appropriate press or hand tools. Ensure the jig plate bore and bushing body OD are clean and free of chips or burrs before installation. Secure the bushing using a compatible LS-TW-2 lock screw to prevent rotation or axial movement during drilling operations. Always verify tool clearance and bushing alignment before running cutting tools through the assembly.