Hex Nuts Grade 2 Zinc NC Zinc plated to meet ASTM Specification B633, Class SC4, Type 1. Used in conjunction with low carbon bolts and screws that are not treated.
Metric - Flat Yellow Zinc Washer M16 - Grade 10.9 Flat washer; used to spread the load Ensure joint tightness in threaded fastening applications Also used as spacers or wear pads