Disc Spring Belleville Chrome Vanadium Min Inside Dia 1.687 In Max Outside Dia 4.750 In Thickness 0.437 In Overall Height 0.497 In Load @ Deflection (Lbs.) 26 290 Lbs Deflection @ Load 0.048 In Calculated Load @ Flat (Lbs.) 1 630.0 Meets/Exceeds DIN 6796