Disc Spring Belleville 302 Stainless Steel Min Inside Dia 0.593 In Max Outside Dia 1.188 In Thickness 0.089 In Overall Height 0.115 In Load 1730 Lbs Deflection @ Load 0.021 In Flat Load 110 Lbs Meets/Exceeds ASI 302 and Government AMS Type 302 Package 6