Disc Spring Split Wave Springs High Carbon Steel Finish Plain Min Inside Dia 0.093 in Max Outside Dia 340.0mm Thickness 1.07mm Overall Height 4.0mm For Hole Size 0.1875 For Rod Size 5/16 in Load @ Deflection (Lbs.) NA Deflection @ Load 8.64mm Meets/Exceeds SWRH72A GB4357-B Package Quantity 10