Material : The channel nuts are cold pressed, tapped so teat teeth will provide a 'BITING' action into the is turned edges of channel sections. The nut bodies are designed with beveled end which lock into position by contact with interior side walls of channel when turned at 90 degree.The channel nuts are also available in SS-304 & SS-316 grades with bright finish as per BS-6946.Finish available : Zinc Plated, Yellow passivation, Hot dip galvanized