Disc Spring Metric Disc Spring High Carbon Steel Finish Phosphate Min Inside Dia 40.5mm Max Outside Dia 61.5mm Thickness 0.70mm Overall Height 1.8mm Load @ Deflection (Lbs.) 186N Deflection @ Load 0.82mm Meets/Exceeds GB/T 1222-2007 ASTM-A684 Package Quantity 10