... steel, brass,aluminium. Riveting nut(Flat head,Knurled body , Closed end) We use cold forged technique, not only save materials,good ... . types: flat head ,countersunk head, round body, hex body, open end, closed end, body with ribben, body with groove and so on . also ... , inch: 1/2,3/8,1/4,5/32 3/16,5/16. material: steel, stainless steel, brass,aluminium.ProductsMaterialFinish(plating)SizeStandardrivet ...