Each nut is 8mm thick and manufactured from mild steel with a hot dipped galvanised (HDG) finish to ensure superior corrosion resistance. These M6 hot dipped galvanised channel nuts (also known as M6 plain Zebs) are designed for secure, long-lasting fixing within 21x41mm and 41x41mm Unistrut-type channels. Designed to resist corrosion, they're perfect for use in outdoor or exposed environments. Supplied in trade packs of 100, they offer great value and convenience for. Yellow Zinc Plated Custom Made Cage Nuts Used in Power Distribution Boxes The cage nuts are used in power distribution boxes. We have ready stock of standard weld nuts, for small quantity order, we are ready to ship in a short time. Compatible with 41mm channel.