Disc Spring,Split Wave Springs,High Carbon Steel,Finish Plain,Min. Inside Dia. 0.093 In.,Max. Outside Dia. 3.9mm,Thickness 0.03mm,Overall Height 0.3mm,For Hole Size 0.1875,For Rod Size 5/16 In.,Load @ Deflection (Lbs.) NA,Meets/Exceeds SWRH72A, GB4357-B,Package Quantity 10