... .8, 6.8, 8.8, 10.8,S304 3. bolt, nut, washer, screws,threaded rod threaded rod1. DIN, ASME, ISO, EN ... , painted, bright, black,oiled5. carbon steel, stainless steel6. Round, hexagonal, square head nut.7. package by box. CERTIFICATE: ISO9001 threaded rod