Disc Spring, Belleville, 302 Stainless Steel, Min Inside Dia 0.692 In, Max Outside Dia 1.375 In, Thickness 0.044 In, Overall Height 0.088 In, Load 270 Lbs, Deflection @ Load 0.023 In, Flat Load 1032 Lbs, Meets/Exceeds ASI 302 and Government AMS Type 302, Package 6