![]() ![]() Following heat treating they must be kept in a freezer for no longer than 20 minutes prior to driving. "D" and "DD" rivets are commonly called icebox rivets because they must be heat treated before use. Double-dimples on the head (and a heavy silver color) will indicate a monel rivet, usually found in high strength locations or in firewalls where temperature may be a consideration. This makes the center of the rivet easier to locate when drilling off the head. The most common rivet for AME's is the "AD" rivet with a single dimple in its head, which can be installed without any additional handling. "B" rivets, alloyed with magnesium is identified with a cross on its head. Rivets with no head markings are soft 1100 (pure) aluminum, and not used in structural applications. Aircraft rivets are identified by the marks on the manufacturer's head, and the alloys are represented by a letter (or letters) in the part number. We know the importance of the lowly aircraft rivet now let's take a closer look at the details surrounding these myriad little items. AME Structures Solid Rivet Identification We've all seen the articles floating around about the 1.8 million fasteners required to build the DC-10's and 747's and other mega-aircraft. ![]()
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