Fastener Type: Hex Serrated Flange Nut. Thread Diameter: M8; Thread Pitch: 1.25mm; Flange Diameter(A): 18mm/0.7". Width Across Flat Size (B) : 13mm;Nut Height (M) : 7.8mm. Made of stainless steel 201, wear-resisting and durable to use.. Self-locking serrated flange digs into the material being fastened to help prevent loosening..
