ACDelco Multi-Purpose Bolt - 11547214 Part #: 11547214 Line: ACD ACDelco Multi-Purpose Bolt 1 Year Limited Warranty Thread Size: M12 Length (in): 3-3/16 Inch Length (mm): 81mm Thread Diameter (in): 1/2 Inch Thread Diameter (mm): 12mm Color/Finish: Silver Show More Show Less