This Clevis manufactured by FK Bearings is made of low carbon steel, zinc plated and chromate treated.B Dia: 1/2 x 5/8 B Dia: 0.5000 D Dia: 1.125 T Width: 0.825 A Length: 3.375 C Length: 2.000 S Slot: 0.375 N Thread: 5/8-18