ISO 7320:2021

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 7320
ISO/TC 20/SC 10
Aerospace — Couplings, threaded
Secretariat: DIN
and sealed, for fluid systems —
Voting begins on:
2021­03­03 Dimensions
Voting terminates on:
Aéronautique et espace — Raccordement fileté étanche pour les
2021­04­28
systèmes de fluides — Dimensions
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 7320:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
©
NATIONAL REGULATIONS. ISO 2021

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ISO/FDIS 7320:2021(E)

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ii © ISO 2021 – All rights reserved

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ISO/FDIS 7320:2021(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Sealing principle and assembly of the coupling . 1
5 Dimensions . 1
5.1 Port connection . 1
5.2 Fitting end . 3
5.3 O­ring seal . 5
Bibliography . 7
© ISO 2021 – All rights reserved iii

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ISO/FDIS 7320:2021(E)

Foreword
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This document was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles,
Subcommittee SC 10, Aerospace fluid systems and components.
This third edition canc
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