... , 12.9 grade CE certifation Hardness: HRC36-42 7/8"*158 Railway fastening systems bolts nuts and washers Details of the ... , DIN, JIS, UNI, GB, ISO, etc. 2. Size: 7/8"*158 3. Materials: Steel 4. Grade: Accordingto client's requiremens, 5 ... "2-3/8"8Or according to customers’ requirements 7/8"*158 Square Head Bolts Nuts and Washers with CE certifation