M16-2 x 65 Metric Socket Head Cap Screw Class 12.9 ISO 4762 Black Ox .343 They are made of hardened

They are made of hardened steel with a zinc bake finish for corrosion resistance

This hex nut is ideal for use with bolts of the same size and thread pitch

this nut features a heavy hex shape that allows for easy tightening and loosening with a wrench

With its hexagonal head and Grade 8 strength rating

M16-2 x 65 Metric Socket Head Cap Screw Class 12.9 ISO 4762 Black Ox .343 They are made of hardenedThe M16 2 x 65 Metric Socket Head Cap Screw Class 12. 9 ISO 4762 Black Ox is a high strength, corrosion resistant fastener designed for demanding applications. It features a hexagonal socket drive for easy installation and removal, and a black oxide finish for enhanced durability and resistance to wear and tear. The screw is made of alloy steel and heat treated to achieve a tensile strength of 12. 9, making it suitable for use in high stress