... . 3.Packing: 25 kg/ carton 1"-4" galvanized concrete steel nails1.Length: 19-120mm 2.Dia: 2.0 - 5.2mm 3.Finish: EG ... nuts, hex nuts, hex flange nuts, wing nuts, weld nuts, square nuts, cap nuts.Washers: flat washers, spring washers, lock washers ... , structural Washers. square washer, bowl washer.Screws: machine screws, self tapping screws, self ...