Disc Spring, Belleville, 302 Stainless Steel, Min Inside Dia 0.453 In, Max Outside Dia 0.937 In, Thickness 0.070 In, Overall Height 0.090 In, Load 1030 Lbs, Deflection @ Load 0.016 In, Flat Load 1471 Lbs, Meets/Exceeds ASI 302 and Government AMS Type 302, Package 12