Flat metric flat washers (DIN 9021) made from A2-70 stainless steel 304 — engineered for reliable electrical and mechanical connections. Key features Type: Flat washers / metric metal washers, DIN 9021. Material: A2-70 stainless steel 304 — offers durable performance and good corrosion resistance for typical electrical and marine environments. Sizes available: M1.6, M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22. Function: Distributes bolt/nut load, protects mounting surfaces, and supports secure threaded electrical connections. Why you need these washers Ensure stable electrical and mechanical joins: Flat washers provide even load distribution and reduce the risk of bolt or terminal deformation that can weaken electrical contact. Improve long-term reliability: Stainless steel A2-70 reduces corrosion-related failures in household, commercial, automotive, and marine settings. Fit-for-purpose metric sizing: Wide size range covers small electronics to larger fastenings so you can match the washer to the bolt or stud for a proper fit. Performance and compatibility Compatible with standard metric bolts, screws, and studs where DIN 9021 flat washers are required. A2-70 stainless steel 304 balances strength and corrosion resistance suitable for indoor and many outdoor applications; use in harsher saltwater environments may require additional consideration. Typical applications Automotive battery terminals and chassis grounding: use to secure battery clamps and grounding straps where stable electrical contact and surface protection are essential. Marine and boating hardware: flat washers help protect painted or plated surfaces and maintain secure connections on deck fittings and electrical panels. Household and commercial appliances: mounting motors, panels, and electrical components where threaded studs or bolts provide the power or grounding connection. Practical notes Select the washer size to match the bolt diameter (see size list above) and ensure proper seating. For electrical joints, pair with appropriate nuts/bolts and ensure clean, tight connections to minimize resistance. Follow any application-specific standards or corrosion protection requirements for extreme environments. Specifications (as supplied) Standard: DIN 9021 Material: A2-70 stainless steel 304 Sizes: M1.6, M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22