Description
This is a black body bolt with a thread diameter of 5/16″ UNC approx: 7.94mm. Used to mount screens and similar body parts. The bolt has a rotatable lock washer in the skull. It is thus an American coarse threaded bolt that has an outer diameter of 7.94mm, which is then called 5/16. It has 18 threads in one inch = 25.4mm, if you are unsure, you can count the number of threads the screw has in 25.4mm. The length is the total length of the bolt from the washer, it is given in millimeters. The diameter of the tray varies on the different lengths.