... . Grade 4.8, 6.8, 8.8, 10.8,S304 3. bolt, nut, washer, screws,threaded rod threaded rod1. DIN, ASME, ISO, EN standard2. Grade 4.8, 6.8, 8.8, 10.8,S3043 ... . bolt, nut, washer, screws,threaded rod4. galvanized, painted ... , square head nut.7. package by box. CERTIFICATE: ISO9001 threaded rod