DS EN 2552:1993 Aerospace Series - Rivets, Solid 100 Degrees Normal Countersunk Head With Dome, In Aluminium Alloy 2117, Anodized Or Chromated, Inch Based Series Defines the characteristics of solid rivets, with 100 degrees normal countersunk head, inch based series, in aluminium alloy, anodized or chromated, for maximum operating temperature 120 degrees C.