Boneham CB00001238 Slip-fixed Drill Bushing Steel

Product Description

The BONEHAM CB00001238 is a slip-fixed (SF) drill bushing designed to guide cutting tools with precision during drilling, reaming, and boring operations. It features an inside diameter of 0.182 inches, a body outside diameter of 0.3125 inches (5/16 inch), and a length under head of 0.75 inches (3/4 inch). Constructed from steel with a hardness rating of 60 to 65 HRC, this bushing delivers consistent wear resistance in demanding jig and fixture applications. The head-style design seats securely in a drill jig plate and locks in place using an LS-1 compatible lock screw. This is a renewable bushing, allowing replacement without retooling the fixture body.

This slip-fixed bushing is used in drill jig fixtures across manufacturing, machining, and tooling operations where repeatable hole location accuracy is required. The SF designation indicates a slip-fit installation method, meaning the bushing is inserted and secured by a lock screw rather than press-fit permanently. This configuration is standard in production environments where bushings must be swapped out for different tool diameters during multi-step machining sequences. Machinists and tooling technicians working in metal fabrication, aerospace, automotive, and general manufacturing will encounter this bushing in fixed and rotary jig plate assemblies.

Key Features

• Slip-fixed (SF) installation method allows tool-free bushing swaps during multi-operation drilling sequences
• Inside diameter of 0.182 inches corresponds to a No. 14 wire gauge drill size for precise tool guidance
• Steel construction hardened to 60 to 65 HRC for high wear resistance and long service life
• Renewable bushing design supports replacement without modifying the drill jig plate
• LS-1 compatible lock screw interface ensures positive retention during operation
• Inside diameter tolerance held to +0.0001 to +0.0004 inches for accurate tool guidance

Compatibility

Designed for use in drill jig fixtures that accept SF-style slip-fixed bushings with a 0.3125-inch body outside diameter. Compatible with LS-1 lock screws. Conforms to ANSI standards for drill bushing dimensions and fit.

Installation Notes

Installation is performed by tooling technicians or machinists as part of drill jig setup or maintenance. Ensure the jig plate counterbore and liner bushing are clean and free of chips before inserting the bushing. The lock screw must be properly engaged to prevent rotation or axial movement during drilling. Always verify tool-to-bushing clearance before starting a machining cycle.