Penn Engineering
rivets are different from standard rivets.
Penn Engineering is a company that produces fasteners and machines for attaching those fasteners. Rivets, for instance, are an extremely old type of permanent fastener where a piece of metal is driven between two layers of material and both ends hammered too wide for it to come out. However, Penn Engineering has their own twist on the rivet.
Threads
Penn Engineering rivets, specifically the Atlas line of rivets, aren't strictly permanent fixtures like rivets traditionally are. These rivets are heavy-duty on the outside, but the interior has a hollow, threaded compartment. This allows the rivet to hold strong, but if it needs to be removed, it can just be unscrewed like any screw fastener.
Backing
The backing for Penn Engineering threaded rivets is usually made out of heavy-duty plastic, or of the same material as the rivet itself. The backing is corrosion resistant, and is meant to be removed just as easily as it's put in. This makes the rivet able to be used over and over again, or removed when an object is disassembled.
Profile
Penn Engineering rivets have a low profile that's meant to be as flush as possible with the surrounding material being bound. The rivet heads are either rounded or hex shaped, and the metal is smooth to prevent snags and catches. The reverse side of the rivet is meant to be smooth as well, giving the appearance of a traditional rivet.
Color
Penn Engineering rivets come in a handful of different colors. Stainless steel, sometimes thought of as a bright silver, as well as copper and brass toned rivets are the most common. However, these rivets can be painted over, which will provide an extra layer of protection between the rivet and the elements once it's installed.
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