Boneham SP00008904 Slip-fixed Drill Bushing 21/64 in Id

Product Description

The BONEHAM SP00008904 is a slip-fixed drill bushing designed to guide cutting tools accurately through jig plates in precision machining and metalworking applications. Assigned industry code SF, this bushing features a 21/64 inch inside diameter and a body outside diameter of 0.750 inches. The head outside diameter measures 1-3/64 inches with a head height of 1/4 inch. The body length under the head is 1-1/2 inches. Slip-fixed bushings lock into a liner bushing and are removable for tool changes, making them a standard choice in production jig and fixture work. Installation is handled by machinists and toolmakers working with drill jigs.

This bushing fits production drilling, reaming, and boring setups where repeatable hole location is required. It seats into a compatible liner bushing pressed into the jig plate, allowing the SF bushing to be swapped between operations without disturbing the fixture. Typical applications include batch-production metal fabrication shops, toolrooms, and assembly jig stations. The renewable design extends fixture life by allowing the wearing component to be replaced independently of the jig plate.

Key Features

• Slip-fixed (SF) installation method locks into liner bushing and is field-removable
• Inside diameter of 21/64 inches for precise tool guidance
• Body outside diameter of 0.750 inches for standard liner bushing compatibility
• 1-1/2 inch length under head provides extended tool guidance through thick jig plates
• Renewable bushing design allows replacement of the wear component without full fixture rework
• Head outside diameter of 1-3/64 inches with 1/4 inch head height for positive seating

Compatibility

Designed as an OEM-style replacement or production component for drill jig fixtures requiring a slip-fixed bushing with a 21/64 inch bore and 3/4 inch body outside diameter.

Installation Notes

Installation and replacement of slip-fixed bushings is performed by machinists or toolmakers. Always ensure the mating liner bushing is clean and free of debris before inserting the SF bushing. Use the appropriate locking mechanism specified for the liner bushing style to secure the bushing in service position. Confirm tool clearance and bushing alignment before resuming drilling or reaming operations.