Boneham SFT284IB Slip-fixed Drill Bushing 0.29 in Id Steel

Product Description

The BONEHAM SFT284IB is a slip-fixed drill bushing designed to guide cutting tools with precision during drilling, reaming, and boring operations. Built to industry code SF, this head-type bushing seats into a drill jig or fixture to maintain accurate hole location and consistent tool alignment across repeated operations. The inner bore measures 0.29 inches in diameter with a tight inside diameter tolerance of +0.0001 to +0.0005 inches, ensuring minimal tool wander. The body is manufactured from steel and hardened to 60 to 65 HRC for wear resistance under sustained production use. A licensed ANSI-standard component, it is compatible with LS-TW-2 lock screws and is classified as a renewable bushing, meaning it can be replaced without disturbing the rest of the jig assembly.

This bushing is used in drill jig fixtures across manufacturing, tool-and-die, and precision machining environments. It is suited for production drilling operations where hole location tolerance is critical and where bushing replacement due to wear is a routine maintenance task. The slip-fixed design allows the bushing to be locked in position during use and removed when the operation is complete. It is typically installed and serviced by machinists, toolmakers, or fixture maintenance technicians.

Key Features

• Slip-fixed (SF) installation method for secure, removable positioning in drill jig liners
• Inside diameter of 0.29 inches with tolerance of +0.0001 to +0.0005 inches for precise tool guidance
• Steel construction hardened to 60 to 65 HRC for extended wear life in production environments
• Head-type design with 5/8 inches head outside diameter and 1/4 inches head height
• Renewable bushing classification allows field replacement without jig disassembly
• Compatible with LS-TW-2 lock screws; meets ANSI standards

Compatibility

Compatible with LS-TW-2 lock screws. Designed as an ANSI-standard renewable slip-fixed drill bushing for use in standard drill jig liner systems requiring an SF-coded head bushing with a 0.29 inches bore and 7/16 inches body outside diameter.

Installation Notes

Installation and replacement should be performed by a qualified machinist or toolmaker with the jig fixture secured and all associated machinery powered down and locked out before service. Use the appropriate press or installation tool to seat the bushing without damaging the bore or head seating surface. Verify lock screw engagement with an LS-TW-2 compatible screw after installation to confirm the bushing is secured against rotation and axial movement during use.