M16-2 x 180 Metric Socket Head Cap Screw Class 12.9 ISO 4762 Black Ox KWN188 The nut also has a

The nut also has a wax coating that helps to prevent seizing and galling

preventing the screw from loosening or pulling out over time

This screw is made of steel and has a zinc plating

The hex washer head has a 9/16 inch diameter and a height of 1/4 inch

5/16-18 x 2 Carriage Bolt Fully Threaded Zinc is a type of fastener used to securely attach two pieces of material together

M16-2 x 180 Metric Socket Head Cap Screw Class 12.9 ISO 4762 Black Ox KWN188 The nut also has aThe M16 2 x 180 Metric Socket Head Cap Screw Class 12. 9 ISO 4762 Black Ox is a high strength, corrosion resistant fastener designed for use in demanding applications. It is manufactured from alloy steel and heat treated to a tensile strength of 12. 9 GPa. The screw has a black oxide finish that provides additional corrosion resistance and a sleek appearance. The socket head design allows for easy installation and removal with a hex key or socket