Have you heard of truss head screws? They are commonly used in the aerospace manufacturing industry. Like all screws, truss head screws feature external threading, which allows them to secure parts with internal threading. Truss head screws, though, feature a unique type of head that distinguishes them from other types of threaded fasteners.
Also known as a mushroom head screw, a truss head screw is a type of threaded fastener with a wide and rounded head. The photo above shows a collection of truss head screws. As you can see, they all have a wide and rounded head.
Truss head screws are designed to protrude out the surface into which they are driven. They have a wide, rounded head. Driving a truss head screw into the surface of an object will result in the head protruding out.
They may look similar, but truss head screws and pan head screws aren’t the same. Truss head screws have a wider head than their pan head counterparts. You can find them in different lengths. Nonetheless, most trust head screws have a wider head than pan head screws.
Truss head screws also have a lower profile than pan head screws. They sit lower to the surface into which they are driven than pan head screws.
With their wide and rounded head, truss head screws offer several benefits. They are incredibly strong, for instance. Truss head screws are often used to assemble fuselages and other aerospace components because of their superior level of strength.
Another benefit of truss head screws is better load distribution. All truss head screws have a wide head. Along with a round shape, this is one of their defining characteristics. When installed, the wide head will distribute the load while subsequently protecting the part or parts from damage.
You can find truss head screws with different head recesses. Phillips is probably the most common head recess used for truss head screws. It features four points in a cross-like shape. Other truss heads have a slotted or hex recess.
Screws are often classified according to their head. Truss head screws, for example, have a wide and rounded head. They are available in different head recesses, but all truss head screws feature a wide, rounded head.