Boneham SFT164DK Slip-fixed Drill Bushing Steel

Product Description

The BONEHAM SFT164DK is a slip-fixed drill bushing designed to guide cutting tools with precision during drilling, reaming, and boring operations in production jigs and fixtures. Built from steel with a hardness rating of 60 to 65 HRC, this SF-series bushing accepts a wire size 35 drill (0.1100 inch inside diameter) and features a 0.2500 inch body outside diameter. The head outside diameter measures 0.4375 inches with a head height of 0.2500 inches. A 0.2500 inch length under head seats the bushing flush and secure in the jig plate. It is a renewable bushing compatible with the LS-TW-2 lock screw. This part is installed by machinists, toolmakers, and manufacturing technicians working with drill jig assemblies.

The SFT164DK is used in production drilling applications where accurate, repeatable hole location is required. It seats into a liner bushing already pressed into the jig plate and is held in place by the LS-TW-2 lock screw, allowing the bushing to be changed out when worn without disturbing the surrounding tooling. Typical environments include machine shops, assembly lines, and production facilities running moderate to high drill cycles on steel, aluminum, or similar workpiece materials. The ANSI-standard design ensures drop-in compatibility with conforming jig components.

Key Features

• Slip-fixed (SF) bushing style — removable and renewable without liner replacement
• 0.1100 inch inside diameter accepts a wire size 35 drill
• Steel construction hardened to 60 to 65 HRC for extended wear life
• Inside diameter tolerance held to +0.0001 to +0.0004 inches for precise tool guidance
• Compatible with LS-TW-2 lock screw for positive retention in the liner
• Meets ANSI standards for drill bushing geometry and interchangeability

Compatibility

Designed for use with LS-TW-2 compatible lock screws in ANSI-standard slip-fixed drill jig liner bushings. Conforms to SF-series industry code specifications for interchangeable drill bushing assemblies.

Installation Notes

Installation is performed by machinists or toolmakers familiar with drill jig assembly. Before installing or removing this bushing, ensure the machine is powered down and the jig is clear of cutting tools. The bushing is inserted into the liner by hand and secured using the appropriate LS-TW-2 lock screw — do not use impact tools to seat the bushing. Inspect the bore and seating surfaces for burrs or debris before installation to protect the precision inside diameter tolerance.