SAE AS4875B

This SAE Aerospace Standard (AS) establishes the requirements for straight threaded boss or flanged fluid connection fittings (see Section 6) for use in all types of fluid systems. Revise AS4875 by including individual tables showing recommended operating pressure ratings for fittings when used on CRES and Al Alloy tubing. Document title revised. Note 2.1 updated to include specifications mentioned herein. Note 3.1.1 revised. Note 3.1.2 added. Notes /5/, /6/, /7/, and /8/ and optional material added to Table 1. Note 2.1 and Table 1, AMS4134 replaced by AMS4133 (AMS4134 was inadvertently listed as 2014-T6. Appropriate T6 spec should be AMS4133). Upper range of hardness requirement in note 3.3.3 revised. Note 3.6.4 (d) revised. Note 6.2 revised. Historical information added to Note 6.2. Tables 5A and 5B added. Note 6.2.2 revised and supersession Table 6 added. Lessons learned Note 6.2.4 added. General updates included. Note 4.5.1.2 revised to remove the statement that destructive testing is required to retain QML status. This requirement is regulated by AC7112.

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