Boneham SFT288HJ Slip-fixed Drill Bushing 0.257in Id

Product Description

The BONEHAM SFT288HJ is a slip-fixed drill bushing designed to guide cutting tools with high precision during drilling, reaming, and boring operations. Assigned industry code SF, this headed bushing installs into a liner bushing and locks in place via a compatible LS-TW-2 lock screw, making it removable for tool changes while maintaining accurate hole location. The inside diameter is 0.257 inches with a tight tolerance of plus 0.0001 to plus 0.0005 inches, ensuring consistent tool guidance. Constructed from steel, it delivers the wear resistance required for production jig and fixture applications. Machinists, toolmakers, and jig builders are the primary installers.

The SFT288HJ is suited for use in drill jigs and fixture plates in manufacturing and machining environments. Its slip-fixed design makes it well matched for operations requiring frequent bushing changes between tooling steps, such as drill-to-ream sequences. The 1/2-inch length under head provides adequate tool guidance depth for typical production work. This bushing is renewable, meaning it can be replaced independently of the liner bushing when worn, reducing fixture maintenance costs in high-cycle applications.

Key Features

• Slip-fixed installation method with head for positive seating against the jig plate surface
• Inside diameter of 0.257 inches with plus 0.0001 to plus 0.0005 inch tolerance for precise tool guidance
• Compatible with LS-TW-2 lock screw for secure, repeatable positioning
• Renewable bushing design allows replacement without disturbing the liner bushing
• Steel construction provides hardness and wear resistance for production use
• Not counterbored — standard headed configuration for flush or surface-mount jig plates

Compatibility

Compatible with LS-TW-2 lock screws. Designed as an OEM-style slip-fixed renewable bushing for use with standard SF-series liner bushings in drill jig and fixture applications.

Installation Notes

Installation is performed by toolmakers or machinists during jig assembly or bushing replacement. The slip-fixed bushing is inserted into a press-fit liner bushing and secured with an LS-TW-2 lock screw. Ensure the jig plate and liner bushing are free of chips and burrs before seating the bushing to maintain positional accuracy. De-energize and lock out all machine tooling before servicing any jig fixture components.