Disc Spring,Metric Disc Spring,Carbon Steel,Finish Oil,Min. Inside Dia. 0.402 In.,Max. Outside Dia. 0.787 In.,Thickness 0.5mm,Overall Height 1.15mm,Load @ Deflection (Lbs.) 284N,Deflection @ Load 0.49mm,Calculated Load @ Flat (Lbs.) 532N,Meets/Exceeds DIN 2093,Package Quantity 10