... material: steel, stainless steel, brass,aluminium. We can produce it according to the customer's requirement. Insert Nutwe use cold forged technique, not ... ribben, body with groove and so on . also we can produce according to customer's drawing. specification:M3 ,M4 ,M5, M6, M8 ... nutcap nutnotch plus nutflange nutscrewWe can produce according to customer's drawing requirement Insert Nut