Washers – Swing C-Washer Made from cold finished steel, then case hardened and ground. Black oxide finish., Inch S&W P/N C-C (A) Slot End Radius (B) Slot Dia (C) Hole End Radius (D) Thickness (E) Hole Dia (F) Screw Size (G) MSW-1 1 3/4 13/32 3/8 1/4 5/16 1/4-20 MSW-2 1 1/4 1 17/32 1/2 3/8 3/8 5/16-18 MSW-3 1 1/2 1 1/8 21/32 9/16 3/8 1/2 3/8-16 MSW-4 1 3/4 1 1/4 25/32 5/8 1/2 1/2 3/8-16