Sioux Chief 523 Series vinyl-coated steel clamps can be used where necessary for fastening tube, pipe or other conduit. The 523 clamps are designed to wrap around and secure conduit with a screw. Galvanized for corrosion resistance, and vinyl-coated to secure and protect PEX tube, copper tube, gas pipe or other conduit from electrolysis. Can be used to secure a PowerBar adjustable bracket to 3/8" threaded rod for suspended installations. Clamp shall be secured to the PowerBar adjustable bracket with a screw, or may be screwed directly to building structure. Complies with National Gas Fuel Code for supporting CSST.