... brass,aluminium. Riveting nut(Flat head,Knurled body , Closed end) We use cold forged technique, not only save materials,good ... body, hex body, open end, closed end, body with ribben, body with groove and so on . also we can produce according to customer ... 6.JISinsert nuttubular nutrivetsthread nutcap nutnotch plus nutflange nutscrewWe can produce according to customer's drawing requirement closed ...