M 5 )( m 12 July 8, 2019 16 32 64 128 M 5 m 12 3 M 5 m 12 180 Hbm m 5 m 12 screw thread repair set M ∠ 5 m ∠ 12 180 M 4 5x m 5 120 4 m 5 )= 2 m 12 5 m 7 )= 3 m 12 M 5 m