QJ 196-1980 Ring groove rivet tail section clamping groove was changed to QJ 3249.1-2005 Alloy steel pull-rivet type shear-resisting ring groove rivets - Part 1: Shank with flat head.
QJ 196-1980 Ring groove rivet tail section clamping groove was changed to QJ 3249.2-2005 Alloy steel pull-rivet type shear ring groove rivets - Part 2: 90° countersunk head shank.
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