Disc Spring Metric Disc Spring High Carbon Steel Finish Phosphate Min Inside Dia 90.5mm Max Outside Dia 139.0mm Thickness 1.25mm Overall Height 3.2mm Load @ Deflection (Lbs.) 353N Deflection @ Load 1.50mm Meets/Exceeds GB/T 1222-2007 ASTM-A684 Package Quantity 10