Boneham SF206EC Slip-fixed Drill Bushing 0.136 in Id Steel

Product Description

The BONEHAM SF206EC is a slip-fixed drill bushing designed to guide cutting tools with precision in jig and fixture applications. Built to industry code SF, this bushing features an inside diameter of 0.136 inches (wire size No. 29) 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 inches) with a length under head of 0.375 inches (3/8 inches). Constructed from steel hardened to 60 to 65 HRC, it delivers the wear resistance required in production drilling environments. Installation is compatible with the LS-1 lock screw. This bushing is renewable and meets ANSI standards, making it a reliable choice for toolroom and production floor use.

The SF206EC is suited for use in slip-fixed bushing applications where the bushing must be retained in a jig plate during the drilling or reaming operation but can be removed and replaced when worn. It is commonly installed in drill jigs used in metal fabrication, machining, and manufacturing operations requiring consistent hole placement across multiple workpieces. The head-style design seats against the jig plate surface to control axial position.

Key Features

• Slip-fixed SF bushing conforming to ANSI standards for interchangeability
• Inside diameter of 0.136 inches (No. 29 wire size) with tolerance +0.0001 to +0.0004 inches
• Steel construction hardened to 60 to 65 HRC for long service life
• Head-style design with head OD of 35/64 inches and head height of 1/4 inch
• LS-1 lock screw compatible for secure retention in the jig liner
• Renewable bushing — replaceable without disturbing the liner or jig plate

Compatibility

Designed as an ANSI-standard slip-fixed replacement drill bushing compatible with LS-1 lock screws; fits standard SF-series liner bushings used in drill jig applications.

Installation Notes

Installation is typically performed by machinists or toolmakers. Ensure the jig liner is clean and free of debris before seating the bushing. Use the appropriate LS-1 lock screw to secure the bushing and prevent rotation during operation. Do not force the bushing into an undersized liner; verify liner inside diameter matches the bushing body OD before installation.