Boneham SFT286HG Slip-fixed Drill Bushing 0.25 in Steel

Product Description

The BONEHAM SFT286HG 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 features a 0.25 inch inside diameter with a close tolerance range of +0.0001 to +0.0004 inches, ensuring accurate and repeatable tool guidance. The body outside diameter measures 0.4375 inches and the length under the head is 0.375 inches. Constructed from steel, the SFT286HG is a renewable bushing, meaning it can be removed and replaced without disturbing the drill jig plate. It is compatible with the LS-TW-2 lock screw and is installed and serviced by toolmakers, machinists, and fixture builders.

This bushing is used in drill jigs and fixture tooling across manufacturing, machining, and fabrication environments. The slip-fixed style allows the bushing to be locked in position during use and removed when the operation is complete, making it suitable for production drilling applications where the same hole location is drilled repeatedly. The head-type design seats against the jig plate surface, providing positive axial positioning. It fits applications requiring a 0.25 inch inside diameter guide for standard letter-size E tooling.

Key Features

• Slip-fixed (SF) installation method allows tool-free removal and renewable service
• Inside diameter of 0.25 inches held to a tight tolerance of +0.0001 to +0.0004 inches for precise tool guidance
• Steel construction for durability in production drilling environments
• Head-type design with 0.625 inch head outside diameter and 0.25 inch head height for positive seating against the jig plate
• Compatible with LS-TW-2 lock screw for secure fixture retention
• Renewable bushing design supports in-service replacement without jig rework

Compatibility

Compatible with LS-TW-2 lock screws. Designed as an OEM-style renewable slip-fixed drill bushing for use in standard drill jig plates requiring a 0.25 inch inside diameter, SF industry code bushing.

Installation Notes

Installation and replacement of drill bushings is typically performed by toolmakers or machinists using a bushing press or arbor press. Ensure the jig plate counterbore or through-hole is clean and free of chips before seating the bushing. Secure with the compatible LS-TW-2 lock screw and verify the bushing rotates freely before locking for slip-fixed applications. Always de-energize and secure any machine fixture before servicing bushings in production tooling.