Disc Spring, Belleville, 302 Stainless Steel, Min Inside Dia 0.656 In, Max Outside Dia 1.500 In, Thickness 0.100 In, Overall Height 0.140 In, Load 2250 Lbs, Deflection @ Load 0.032 In, Flat Load 160 Lbs, Meets/Exceeds ASI 302 and Government AMS Type 302, Package 6