Boneham SFT288HS Slip-fixed Drill Bushing 0.272 in Id Steel

Product Description

The BONEHAM SFT288HS is a slip-fixed drill bushing designed to guide cutting tools with precision during drilling, reaming, and boring operations. Classified under industry code SF, this head-type bushing features an inside diameter of 0.272 inches with a tight tolerance of +0.0001 to +0.0005 inches, ensuring repeatable hole location accuracy. The body outside diameter measures 7/16 inches (0.4375 inches) and the head outside diameter is 5/8 inches. Constructed from steel, it delivers the hardness and wear resistance required for sustained production use in jig and fixture applications. A licensed machinist or tooling engineer typically installs and maintains these components in metalworking environments.

This bushing is suited for use in drill jigs and fixture plates across production machining environments, both light industrial and heavy manufacturing. The slip-fixed design allows the bushing to be installed and locked in place using a compatible lock screw, making it appropriate for applications where the bushing remains stationary during a complete machining operation. The lock screw compatibility is rated for the LS-TW-2 style fastener. It is a renewable bushing, meaning it can be removed and replaced without requiring the jig plate itself to be reworked.

Key Features

• Slip-fixed installation method with head for positive seating in drill jig liners
• Inside diameter of 0.272 inches with tolerance of +0.0001 to +0.0005 inches for precise tool guidance
• Steel construction provides hardness and durability in high-cycle machining use
• Head outside diameter of 5/8 inches and head height of 1/4 inches for reliable flange seating
• Renewable design allows replacement without jig plate modification
• Compatible with LS-TW-2 lock screw for secure, vibration-resistant retention

Compatibility

Designed for use with LS-TW-2 compatible lock screws. Functions as a renewable slip-fixed bushing in standard drill jig liners sized to accept a 7/16 inch body outside diameter.

Installation Notes

Installation is performed by qualified machinists or tooling setup personnel. Ensure the receiving liner bore and mating surfaces are clean and free of burrs before pressing or sliding the bushing into position. Secure the bushing with a compatible LS-TW-2 lock screw and verify the bushing does not rotate under load before beginning operations. Always follow applicable shop safety procedures and de-energize or lock out machinery before changing or inspecting bushings.