1 BAG OF 10 PIECES M8-1.25 SERRATED FLANGE LOCK HEX NUTS 304 STAINLESS STEEL Nut Type: Lock Nuts; Specifications meet standard DIN6923 Serrated Flange Nut Specs: Diameter: 8mm, Thread: 1.25 (Coarse Thread), Flange Diameter: 17.3MM, Nut Thickness: 8MM The nuts are made of high-quality 304 stainless steel, corrosion and rust resistant, suitable for humid environment. This material also has high strength and high hardness, will not be damaged under high pressure, and can be used for a long time.