_:n83252a9e65ee4ef1ad64b148817789ebxb187
<http://schema.org/description>
"Used in conjunction with countersunk washers to attach panels to race car. Makes a nice flush finish. These are available in many sizes so you can get just what you need on the back side of the nut (2 threads). Hardened so Phillips head does not distort. "
<https://www.aircraftspruce.ca/catalog/hapages/ms24693.php>