665-7302, RS PRO, A4 316 Stainless Steel Internal Tooth Shakeproof Washer, M5, DIN 6798J, Brand RS Pro, For Screw/Bolt Size M5, Washer Type Internal Tooth, Inside Diameter 5.3mm A4 316 Stainless Steel Internal Tooth Shakeproof Washer, M5, DIN 6798J