Disc Spring Metric Disc Spring High Carbon Steel Finish Phosphate Min Inside Dia 181.0mm Max Outside Dia 268.0mm Thickness 2.50mm Overall Height 5.7mm Load @ Deflection (Lbs.) 1160N Deflection @ Load 2.40mm Meets/Exceeds GB/T 1222-2007 ASTM-A684 Package Quantity 10