Hexagon Flange Nut 304 Stainless Steel M3 M4 M5 M6 M8 M10 M12 Flange Lock Nut DIN6923 Serrated Slip Locking Nut, Find Details and Price about Hexagon Flange Nut and Slip Locking Nut from Jiangxi Runyou Machinery Co., Ltd.