1/2" Channel Nut w/Regular Spring - 316 Stainless Steel Is a strut channel nut used with 1-5/8" x 1-5/8" Strut Channel The indented ridges of the channel nut fit directly into the lips of the channel while the spring presses against the channel to keep the nut from sliding when making connections. Use Like Metal Hardware when looking for nuts, washers, and bolts that fit your application. 316 Stainless Steel provides superior corrosion resistance and is rated for harsh exterior conditions.