MIL-DTL-85061C
TABLE III. Tubing size and wall thickness.
Tube O.D
Nominal Wall
Tube O.D
Nominal Wall Thickness
(inches)
Thickness
(inches)
Minimum (inches)
Minimum (inches)
AL
CRES
AL
CRES
.250
.028
.020
2.000
.035
.035
.375
.028
.020
2.500
.042
.035
.500
.035
.020
3.000
.042
.035
.625
.035
.020
3.500
.049
.049
.750
.035
.020
4.000
.049
.049
1.000
.035
.020
4.500
.065
.049
1.250
.035
.025
5.000
.065
.049
1.500
.035
.025
5.500
.065
.049
1.750
.035
.035
6.000
.065
.049
3.6.10.1 Burst pressure at temperature extremes. The coupling assembly shall not
rupture nor show evidence of leakage at any pressure when tested as specified in 4.5.10.1.
3.6.10.2 Burst pressure at room temperature. The coupling assembly shall not rupture
nor show evidence of leakage at any pressure when tested as specified in 4.5.10.2.
3.7 Maintainability. The coupling assembly when installed in aircraft shall not require
periodic maintenance. The seals installed in the coupling shall be easily replaceable with no
damage to other parts and shall be able to be removed with a minimum of disturbance or
displacement of the installed coupling and tubing. The coupling system maintainability
requirements shall be integrated with the overall aircraft system maintainability programs and
shall comply with the requirements of MIL-HDBK-470.
3.8 Reliability. The coupling assembly shall be designed to withstand the strains,
vibrations, temperature environment incident to aircraft installation and services usage. The
reliability of the coupling assembly shall be an integral part of reliability requirements of the
total aircraft systems.
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