This European Standard defines the dimensions and tolerances for the male sealing end of inch series pipe couplings, 37°, spherical, for aerospace applications. Matched fluid system component shall have a female sealing end in accordance with EN 4550-4.
EN 4550-1:2014 Referenced Document
EN 4550-4:2014 Aerospace series - Pipe coupling@ 37�� Design configuration - Inch series - Part 4: Female sealing ends
ISO 3161:1999 Aerospace - UNJ threads - General requirements and limit dimensions
EN 4550-1:2014 history
2014EN 4550-1:2014 Aerospace series - Pipe coupling@ 37�� Design configuration - Inch series - Part 1: Male sealing ends@ spherical
2003EN 4550-1:2003 Aerospace series - Pipe coupling, 37 degree - Design configuration - Inch series - Part 1: Male sealing ends, spherical