Disc Spring Wave High Carbon Steel Finish Plain Min Inside Dia 4.530 in Max Outside Dia 5.817 in Thickness 0.055 in Overall Height 0.440 in For Hole Size 0.1875 For Rod Size 0.093 Load @ Deflection (Lbs.) 80 Deflection @ Load 0.209 in Meets/Exceeds ASTM-A684