551021 ‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒ Our “Contact washers” family has been designed to ensure secure fastening over time for all assembly challenges. They prevent loosening of threaded assemblies due to vibration or temperature variations. This family includes a complete range of products: some of them can be used separately, others have been designed to be assembled on a nut or a screw, they can ensure electrical continuity, etc. ‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒ Categories: Contact washers, Contact washers | Narrow type, Our Products, Washers Additional information Part print Contact Form Additional information Dimensions 2.10 cm External diameter tolerance + / -0.42 Ø External [d2] (mm) 20.00 Height tolerance +0, 050, 50 Height (mm) 2.10, 2.60 Ø Internal [d1] (mm) 10.20, M 10 Internal diameter tolerance +0, 043, 10.20, 43 Material C60S to C67S Maximum hardness [HV] 510 Minimum hardness [HV] 420 Number of ridges (min) 45 Screw diameter M 10 Screw diameter (US) 3/8 Thickness [e] (mm) 1.60 Thickness tolerance ±0, 005, 05 Heat treatment Yes Part print Contact FormLast name *First name *Company *Email *PhoneMessage *0 / 180 Send the message Related products 550637 550603 550617 550503