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 ... 4.8, 6.8, 8.8, 10.8,S3043. bolt, nut, washer, screws,threaded rod4. galvanized, painted, bright, black5. carbon steel, stainless ...