Disc Spring Metric Disc Spring High Carbon Steel Finish Phosphate Min Inside Dia 25.5mm Max Outside Dia 39.6mm Thickness 0.50mm Overall Height 1.3mm Load @ Deflection (Lbs.) 111N Deflection @ Load 0.60mm Meets/Exceeds GB/T 1222-2007 ASTM-A684 Package Quantity 10