Disc Spring, Curved, High Carbon Steel, Min Inside Dia 0.531 In, Max Outside Dia 0.795 In, Thickness 0.011 In, Overall Height 0.129 In, For Hole Size 13/16 In, For Rod Size 1/2 In, Load 5 Lbs, Deflection @ Load 0.069 In, Meets/Exceeds ASTM-A684, Package 10