General description A4 grade stainless steel flat washer, also known as type 316 S31, offers superior corrosion resistance compared to A2 stainless steel, making it ideal for marine applications, particularly in environments with direct saltwater exposure. Manufactured according to the DIN 125 standard. Technical specifications Inside diameter (d1): 17 mm Outside diameter (d2): 30 mm Material thickness (s): 3 mm
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