Disc Spring, Belleville Spring Washer, Carbon Steel, Finish Plain, Min. Inside Dia. 0.156 In, Max. Outside Dia. 0.312 In, Thickness 0.0108 In, Overall Height 0.0216 In, Load at Deflection 19 Lbs., Deflection at Load 0.006 In, Calculated Load at Flat 27 Lbs., Package Quantity 10