Disc Spring Metric Disc Spring High Carbon Steel Finish Phosphate Min Inside Dia 50.5mm Max Outside Dia 79.5mm Thickness 0.80mm Overall Height 1.9mm Load @ Deflection (Lbs.) 212N Deflection @ Load 0.82mm Meets/Exceeds GB/T 1222-2007 ASTM-A684 Package Quantity 10