Disc Spring, Belleville Spring Washer, Stainless Steel, Finish Plain, Min. Inside Dia. 0.255 In, Max. Outside Dia. 0.5 In, Thickness 0.018 In, Overall Height 0.034 In, Load at Deflection 45 Lbs., Deflection at Load 0.008 In, Calculated Load at Flat 70 Lbs., Package Quantity 10