520301 – Steel ‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒ Our “ONDUFLEX Spring washers” family has been designed to ensure secure fastening over time for all assembly challenges. They compensate axial play and misalignment by keeping tension in an assembly and prevent the risk of loosening. This family includes a complete range of products, with ONDUFLEX spring blocking washers and ONDUFLEX spring pressing washers. ‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒ External diameter tolerance Choose an option+ / -0.24 Ø External [d2] (mm) Choose an option6.00 Height [H] (mm) Choose an option0.8 Height tolerance Choose an option04 Ø Internal [d1] (mm) Choose an option3.20 Material Choose an optionC60S to C75S Maximum hardness [HV] Choose an option520 Minimum hardness [HV] Choose an option440 Screw diameter Choose an option3 Thickness [e] (mm) Choose an option0.40 Internal diameter tolerance Choose an option030 Thickness tolerance Choose an option Heat treatment Choose an optionYes Number of waves Choose an option2 Clear SKU: N/A Additional information Additional information External diameter tolerance + / -0.24 Ø External [d2] (mm) 6.00 Height [H] (mm) 0.8 Height tolerance 04 Ø Internal [d1] (mm) 3.20 Material C60S to C75S Maximum hardness [HV] 520 Minimum hardness [HV] 440 Screw diameter 3 Thickness [e] (mm) 0.40 Internal diameter tolerance 030 Thickness tolerance 003 Heat treatment Yes Number of waves 2