Fastener Type: Hex Serrated Flange Nut. Thread Diameter: 3/4"; Thread Size: 10 threads per inch; Flange Diameter(A): 38mm/1.5". Width Across Flat Size (B) : 28mm/1.1"; Nut Height (M) : 38mm/1.5". Constructed from carbon steel, zinc plated finish, good rust resistance, and durable to use.. Self-locking serrated flange digs into the material being fastened to help prevent loosening..
