SAE ARP1676A

SAE ARP1676A Recommended Formulae for Determining Drop Dimensions for Simple-Bend Tube Fittings with Flared and Flareless End Connections Used in Aerospace Applications (Stabilized: Feb 2022)

standard by SAE International, 02/14/2022

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These formulae shall be used to determine drop dimensions for simple bend tube fittings utilizing flare and flareless end connection designs from 0¿¿ to 90¿¿ used in aircraft and aerospace applications. Individual design standards shall specify parameters, such as centerline bend radius (R), straight tangent length to accommodate bending equipment (X₁ and X₂), and nut to be used.