Stainless Steel Insert Nut 1.ANSI,CE,DIN,BS& non-standard ... .... Stainless Steel Insert Nut ,Stainless Steel Barrel Nut ,Stainless Steel Blind Nut. 1.What’s the specification of our Products ? MaterialCarbon ... each carton will be 22kg -25kg ,and weight of each carton will be packing as per the customer ... with more than 20 years experiences in screw,bolt,nut,washer,rivet, stud, pin,wrench and so on ...