A60555: Square Head Bolt, M30 X 180High strength square head bolt designed for secure fastening in heavy duty applications. Measures 180 mm (7. 09 in) in length with a head thickness of 21 mm (0. 83 in) and a thread pitch of 3. 50 mm (0. 14 in). Features a thread length of 35 mm (1 3 8 in) and a thread size of 30 mm (1. 18 in) for robust performance. Made from high quality general steel for durability and reliability. Finished with zinc coating to resist corrosion and extend lifespan.