3/8 SAE Flat Washer Hot Dip Galvanized 4-40-3 The black oxide finish provides

The black oxide finish provides enhanced corrosion resistance

even surface for fasteners and prevent damage to the material being fastened

They are hot-dipped galvanized for superior corrosion resistance and durability

which allows for the use of a cotter pin to prevent it from loosening

they feature a serrated flange that digs into the mating surface to prevent loosening due to vibration or torque

3/8 SAE Flat Washer Hot Dip Galvanized 4-40-3 The black oxide finish providesThe 3 8 SAE Flat Washer Hot Dip Galvanized is a high quality washer that is designed to provide a smooth, flat surface for the nut and bolt to bear against. This helps to distribute the load and prevent the nut from embedding into the material. The washer is made of steel and is hot dip galvanized for corrosion resistance. It is suitable for use in a variety of applications, including automotive, construction, and manufacturing.