bolt and nut 1. DIN, ASME, ISO, EN standard 2. Grade 4.8, 6.8, 8.8, 10.8,S304 3. bolt, nut, washer, screws,threaded ... rod bolt and nut1. DIN, ASME, ISO, EN standard2. Grade 4 ... , black5. carbon steel, stainless steel6. Round, hexagonal, square head, stud bolt.7. package: box and pallet. CERTIFICATE: ISO9001 bolt and nut