Industrial Grade Nylon Expansion Screw Anchor Pipe Clamp Bracket Concrete Wall Mounting Fastener Kit Product Description The Industrial Grade Nylon Expansion Screw Anchor is an industrial-strength fastening solution designed for pipe clamps, conduit brackets, HVAC duct supports, and heavy mechanical bracket mounting on solid concrete and masonry substrates. Each complete set contains a 10mm diameter PA6 nylon expansion plug pre-matched with an M8 x 60mm zinc-plated steel