MIL-DTL-85061C
TABLE I. Coupling materials.
Material
Code
Aluminum
A
Corrosion Resistant Steel (CRES)
B
3.2.2 Fungus proof materials. Materials that are not nutrients for fungi shall be used to
the greatest extent practicable. In cases where materials that are nutrients for fungi must be used,
such materials shall be treated with fungicidal agent as approved by the contracting activity.
3.2.3 Dissimilar metals. Combinations of tubing and all contacting coupling parts shall
be compatible in accordance with MIL-STD-889.
3.3 Design and construction. The coupling shall be designed for connection of AS5131
tubing style A beaded ends and shall meet the requirements of figure 1 and table II.
3.3.1 Threads. Screw threads shall conform to FED-STD-H28/2. All threaded parts
shall be securely locked in such a manner as to prevent loosening under test conditions specified
herein and under normal service usage. Safety wire per NASM 20995 shall be installed in
accordance with NASM 33540. Wrenching features shall conform to figure 1. Pipe threads
shall not be used.
3.3.2 Angular misalignment. The coupling shall be capable of being installed with a
maximum tubing installation misalignment of 3 degrees in any direction.
3.3.3 Flexure. The coupling shall provide for 1 degree flexure in any direction from any
installed position. The coupling shall provide for a variation in space between tubing ends of
0.062 to 0.188 inch.
3.3.4 Permanent deformation. Installation of the coupling on tubing ends under
conditions specified herein shall not produce a permanent deformation of the coupling.
3.3.5 Tubing. The coupling shall be capable of connecting tubing having an outside
diameter (OD) and wall thickness as specified in table III.
3.4 O-ring seal. The seal, which is used for testing purposes only and is not furnished as
part of the flexible coupling, shall be in accordance with SAE-AMS-P-5315, and SAE-AS29512
or SAE-AS29513 of the applicable size specified in table II.
3.5 Configuration, dimensions, and weight. The configuration, dimensions and weight
shall be in accordance with figure 1 and table II.
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