SAE ARP4919

Fluid Connections, Fittings, Hex Width.

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Standard:
  • ARP4919
Reaffirmed:
  • 2013-01-02
Issued:
  • 1998-05-01
Issuing:
  • G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:

This SAE Aerospace Recommended Practice (ARP) is intended as a guide toward standard practice for selection of nominal hex widths for fittings.

Primarily for fittings which are machined from bar stock and incorporate a hex wrenching surface. The document applies to union fittings (both ends the same size). For reducer fittings, use the hex width for the largest fitting end.

History:
StandardPublishedRevisionStatus
ARP49191998-05-01LatestReaffirmed
AKA:
  • SAE ARP 4919
Sector:
  • Aerospace
Topic:
  • Parts
  • Fittings
  • Hydraulic systems
  • Crashworthiness
  • Certification

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