Sheet metal screw with 7/16″ hexagon head, 5/16″ =7.8mm thread diameter. Length 18.5 cm

Description

A sheet metal screw with a built-in washer. The screw has a 7/16″ hex head and is 7.8mm thick at the top of the threads and about 6.25mm thick at the bottom of the threads. The length measured from the skull is approx. 18.5mm.