Boneham SF326FU Slip-fixed Drill Bushing 0.189 in Id Steel

Product Description

The BONEHAM SF326FU is a slip-fixed drill bushing designed to guide cutting tools with precision in jig and fixture applications. Built from steel with a hardness of 60 to 65 HRC, it delivers the wear resistance required for repetitive drilling operations in production environments. The inside diameter measures 0.189 inches (wire size 12), and the body outside diameter is 0.500 inches with a length under head of 0.375 inches. The head outside diameter is 0.797 inches and the head height is 0.250 inches. This is a renewable bushing, meaning it can be removed and replaced without disturbing the liner bushing pressed into the jig plate, reducing maintenance time on active tooling.

The SF326FU fits standard SF-series slip-fixed bushing applications in drill jigs used across metalworking, fabrication, and toolmaking operations. The slip-fixed configuration allows the bushing to be locked in place using a compatible LS-1 lock screw, preventing rotation during drilling while still allowing removal between operations or tool changes. It is commonly installed by tool and die makers, machinists, and fixture builders working in both job shop and production manufacturing settings. The bushing meets ANSI standards for drill bushing dimensions and interchangeability.

Key Features

• Slip-fixed SF-series design for use with renewable liner bushings in drill jigs
• Steel construction hardened to 60 to 65 HRC for long-term wear resistance
• Inside diameter of 0.189 inches with a tight tolerance of plus 0.0001 to plus 0.0004 inches for accurate tool guidance
• Compatible with LS-1 lock screw to secure bushing position during drilling
• Renewable bushing design allows replacement without removing the liner from the jig plate
• Conforms to ANSI standards for drill bushing interchangeability

Compatibility

Designed for use with SF-series liner bushings and LS-1 compatible lock screws in standard ANSI drill jig assemblies. No counterbore is required in the jig plate for this head-style bushing.

Installation Notes

Installation is performed by machinists or tool and die makers as part of jig and fixture assembly or maintenance. The bushing is inserted into a pressed liner bushing already seated in the jig plate and locked with an LS-1 lock screw. Always ensure the liner bushing bore and the slip-fixed bushing outer diameter are clean and free of burrs or chips before installation. Do not force the bushing into the liner; a proper slip fit should allow smooth hand insertion.