NutChina Stainless Steel SS304 SS316 A2-70 A4-80 Hexagon Nuts with Flange Flange Nut DIN6923/Hex Nut DIN934/ Thin Nut/ Square Nut DIN557/ Wing Nut DIN315/ Nylon Lock Nut, Find details about China Nut, Flange Nut from Stainless Steel SS304 SS316 A2-70 A4-80 Hexagon Nuts with Flange Flange Nut DIN6923/Hex Nut DIN934/ Thin Nut/ Square Nut DIN557/ Wing Nut DIN315/ Nylon Lock Nut