Boneham SF205FR Slip-fixed Drill Bushing 0.185 in Id Steel

Product Description

The BONEHAM SF205FR is a slip-fixed drill bushing designed to guide cutting tools with precision in jig and fixture applications. Classified under industry code SF, this bushing features an inside diameter of 0.185 inches (wire size 13) with a tight tolerance of +0.0001 to +0.0004 inches, ensuring repeatable hole location accuracy. The body outside diameter measures 0.3125 inches (5/16 inch) with a length under head of 5/16 inch. Constructed from steel with a headed design, this renewable bushing is compatible with LS-1 lock screws. It is installed by machinists and toolmakers working with precision drill jigs and production fixtures.

This bushing suits production drilling, reaming, and boring operations where a guided, replaceable bushing insert is required. The slip-fixed design allows the bushing to be installed and locked in place via a compatible LS-1 lock screw, making it suitable for applications requiring periodic bushing replacement without reworking the jig plate. It is commonly used in metal fabrication shops, aerospace component production, and general machine shops where tight positional tolerances are critical to part quality.

Key Features

• Slip-fixed (SF) industry-standard bushing design for use with drill jig liners
• Inside diameter of 0.185 inches (wire size 13) with tolerance +0.0001 to +0.0004 inches for precise tool guidance
• Steel construction provides durability under repeated drilling and reaming cycles
• Headed design with head OD of 35/64 inch and head height of 1/4 inch for positive seating
• Renewable bushing design allows field replacement without liner rework
• Compatible with LS-1 lock screw for secure retention in the liner

Compatibility

Designed for use with standard SF-series drill jig liner systems accepting LS-1 compatible lock screws. Consult your fixture design specifications to confirm liner inside diameter and lock screw requirements before installation.

Installation Notes

Installation is performed by machinists or toolmakers during jig setup or bushing replacement. Ensure the jig plate liner bore is clean and free of chips or burrs before inserting the bushing. Secure the bushing using a compatible LS-1 lock screw tightened according to your fixture design requirements. Do not force or hammer the bushing into an undersized liner, as this may damage the bushing OD or alter the ID tolerance.