Plate clamp working load limit 4 000 lb attachment type pivoting shackle open type manual close type manual with lock minimum material thickness 0 in maximum material thickness 1 in minimum jaw opening 0 in maximum jaw opening 1 in material steel clamp type plate clamp operation vertical lift with 180 degrees flip attachment diameter 3 1 2 in grip type teeth overall height 17 3 8 in overall width 4 1 2 in overall depth 8 3 4 in standards asme bth-1