Disc Spring Metric Disc Spring High Carbon Steel Finish Phosphate Min Inside Dia 8.2mm Max Outside Dia 15.8mm Thickness 0.25mm Overall Height 0.5mm Load @ Deflection (Lbs.) 23N Deflection @ Load 0.22mm Meets/Exceeds GB/T 1222-2007 ASTM-A684 Package Quantity 10