2’Flat head bolt +nut

is a type of bolt with a flat head that sits flush with the surface of the material.

1. Drilling/countersinking a hole: A hole is drilled into the material to accommodate the bolt. If a flat head bolt is being used, the hole may be countersunk to allow the head to sit flush with the surface.Inserting the bolt: The flat head bolt is inserted through the hole in the material.