Disc Spring Metric Disc Spring High Carbon Steel Finish Phosphate Min Inside Dia 45.5mm Max Outside Dia 71.5mm Thickness 0.70mm Overall Height 2.1mm Load @ Deflection (Lbs.) 185N Deflection @ Load 1.05mm Meets/Exceeds GB/T 1222-2007 ASTM-A684 Package Quantity 10