Disc Spring, Belleville Spring Washer, Carbon Steel, Finish Plain, Min. Inside Dia. 0.317 In, Max. Outside Dia. 0.625 In, Thickness 0.032 In, Overall Height 0.048 In, Load at Deflection 145 Lbs., Deflection at Load 0.008 In, Calculated Load at Flat 260 Lbs., Package Quantity 10