Disc Spring, Belleville Spring Washer, Carbon Steel, Finish Plain, Min. Inside Dia. 0.164 In, Max. Outside Dia. 0.5 In, Thickness 0.025 In, Overall Height 0.037 In, Load at Deflection 73 Lbs., Deflection at Load 0.006 In, Calculated Load at Flat 131 Lbs., Package Quantity 10