1/2-20 NE Nylon Insert Hex Lock Nut Zinc CH5OF and the zinc finish helps

and the zinc finish helps to protect the screws from corrosion

They have a zinc coating for corrosion resistance

They are non serrated

The 3/8-16 x 8 Hex Cap Screw Grade 5 Zinc is a high-quality fastener designed for use in a variety of applications

They have a 3/4" diameter

1/2-20 NE Nylon Insert Hex Lock Nut Zinc CH5OF and the zinc finish helpsThe 1 2 20 NE Nylon Insert Hex Lock Nut Zinc is a type of nut that is used to secure bolts and screws. It is made of zinc plated steel and has a nylon insert that helps to prevent the nut from loosening. The hex shape of the nut allows it to be tightened with a wrench. This nut is commonly used in automotive and industrial applications.