... . 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