Fastener Type: Hex Serrated Flange Nut. Thread Diameter: M10; Thread Pitch: 1.5 ; Flange Diameter(A): 18.2mm/0.72". Width Across Flat Size (B) : 13.8mm/0.54"; Nut Height (M) : 8.6mm/0.34". Constructed from carbon steel, black oxide finish, good rust resistance, and durable to use.. Self-locking serrated flange digs into the material being fastened to help prevent loosening..
