Disc Spring, Belleville, High Carbon Steel, Min Inside Dia 0.406 In, Max Outside Dia 1.240 In, Thickness 0.072 In, Overall Height 0.096 In, Load 700 Lbs, Deflection @ Load 0.019 In, Flat Load 2657 Lbs, Meets/Exceeds ASTM-A684, Package 12