DIN EN 4551:2015-02 Aerospace series - Pipe coupling, 37°, in heat resisting steel - Swivel nuts - Inch series; German and English version EN 4551:2014
2015DIN EN 4551:2015-02 Aerospace series - Pipe coupling, 37°, in heat resisting steel - Swivel nuts - Inch series; German and English version EN 4551:2014
2015DIN EN 4551:2015 Aerospace series - Pipe coupling, 37°, in heat resisting steel - Swivel nuts - Inch series; German and English version EN 4551:2014
2004DIN EN 4551:2004 Aerospace series - Pipe couplings, 37°, in heat resisting steel - Swivel nuts - Inch series; German and English version EN 4551:2003