Fastener Type: Hex Serrated Flange Nut. Thread Diameter: M5; Thread Pitch: 0.8mm; Flange Diameter(A): 11.5mm/0.45". Width Across Flat Size (B) : 8mm;Nut Height (M) : 4.9mm. Made of stainless steel 304, corrosion-resistant and durable to use.. Self-locking serrated flange digs into the material being fastened to help prevent loosening..
