std hex head bolt 24x70 mm long hex head nut spring washer hex head bolt to is 1363 2023 part i property class 4 8 hex head nut to is 1363 2018 part iii rev 5 property class 5 spring washer to is 3063 1994 ref rdso drg no wd 80007 s 12 alt 19 item 63 warranty period 30 months after the dat e of delivery