1/2-13 Serrated Flange Hex Lock Nuts Grade 8 Zinc Yellow CH9C It has a coarse thread

It has a coarse thread pitch of 7 threads per inch

and a flange head that provides a large bearing surface to distribute the load

It is available in a range of sizes to accommodate various bolt diameters

Its fully threaded design ensures a secure hold

This 1/2-13 x 2 Hex Cap Screw is made of steel and has a Grade 8 rating

1/2-13 Serrated Flange Hex Lock Nuts Grade 8 Zinc Yellow CH9C It has a coarse threadThese 1 2 13 Serrated Flange Hex Lock Nuts are made of Grade 8 steel and have a zinc yellow finish. They are designed to be used with bolts of the same size and thread pitch. The serrated flange helps to prevent the nut from loosening due to vibration or movement. These nuts are commonly used in automotive, construction, and other industrial applications. They are also known as prevailing torque nuts or lock nuts.