SAE Standards Works
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
AS4875/1A - Fittings, Straight Thread Boss or Flanged to 37° Flared, Fluid Connection
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Earnest E. Brown
Fittings, Straight Thread Boss or Flanged to 37° Flared, Fluid Connection
This SAE Aerospace Standard (AS) establishes the requirements for fluid fittings that combine both straight thread boss or flanged connections and 37° flared connections for use in all types of fluid systems. Fittings shall be furnished in the types and styles designated by the applicable AN, AS, MS, NAS, or other engineering standard drawings. This specification is the same as MIL-F5509 as applicable to straight threaded boss or flanged fittings except for updated materials and process specifications and industry coordinated general improvements. It is intended to serve as a procurement specification for the fittings described herein and in Section 6.
Include PRI QML/QPL, QML spec requirements in the applicable AS fitting procurement specs listed in the AC7112/2
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