Hinges and Hardware 101 - Extruded Aluminum Hinges

What exactly are extruded aluminum hinges?  Unlike regular rolled hinges where the flat sheet of metal is curled around the pin, extruded hinges are one solid piece of metal.  Each leaf is a separate solid piece.  The knuckles are then milled out and a hole drilled through the entire length of the hinge.  The two halves are fitted together, and pin slid thru the hole to make the hinge assembly.  This type of construction allows for much closer tolerances for play in the hinge, as well as increased strength in a lightweight material.  Commercial versions of this hinge are available, but the most popular would be the MS20001 series for aerospace applications.  Check out our entire line of extruded hinges here.