MIL-DTL-25677E
3.4.7 Interchangeability. Parts having the same manufacturer's PIN shall be functionally and
physically interchangeable. All parts manufactured to the same military PIN shall be functionally
interchangeable.
3.4.8 Interoperability. Parts manufactured in accordance with MIL-DTL-25677/2, MIL-DTL-25677/3,
and MIL-DTL-26577/4 shall operate on any adapter manufactured in accordance with MIL-DTL-25677/1.
3.4.9 Connections. The adapter fitting end shall be in accordance with SAE-AS4396.
3.4.10 Screw threads. Screw threads shall be in accordance with SAE-AS8879.
3.4.11 Anti-seize compound. An anti-seize compound shall be used on threaded aluminum or
aluminum alloy parts.
3.5 Construction. The adapter shall be constructed to withstand the normal strains of jars, vibration,
and such other conditions incident to shipping, storage, installation, and service. All loose parts such as
gaskets and seals shall be securely attached to the adapter so that they will not become detached or
damaged due to rough or inept handling while connecting and disconnecting the adapter to the nozzle.
Connecting and disconnecting the adapter shall have no adverse effect on its leakage characteristics.
3.6 Finish.
3.6.1 Non-corrosion resistant metals. All metals used in the construction of the nozzle that are not
corrosion-resistant shall be protected to resist corrosion from salt spray, atmospheric conditions, storage,
and normal service life, see 3.6.2 and 3.6.3. It is recommended to use grade 3 or 4 oil in accordance with
MIL-PRF-7808 for internal parts.
3.6.2 Aluminum alloy parts. Aluminum alloy parts shall be anodized in accordance with
SAE-AMS-2472.
3.6.3 Steel parts. Steel parts using cadmium plating corrosion protection shall be plated externally in
accordance with SAE-AMS-QQ-P-416, type II, class 2.
3.7 Performance. The adapter shall operate without failure under the following conditions. There
shall be no leakage except for entrapped fluid within the adapter which would be lost at disconnection.
3.7.1 Adapter connect and disconnect. Adapters when tested in accordance with 4.7.2 connecting
and disconnecting the nozzle to the adapter shall be accomplished manually throughout the operating
temperature range. Each connection and disconnection shall be accomplished with relative ease and
rapidity and without the use of tools. There shall be no binding, sticking, or scoring of parts.
3.7.2 Pressure test. When subjected to the pressure test specified in 4.7.3 the adapter when
connected to the nozzle shall show no visible signs of leakage.
3.7.3 Operation and leakage. The adapter shall have no visible signs of leakage when tested in
accordance with 4.7.4. The adapter shall operate when subjected to the operating pressures
encountered in turbine engine oil systems. The nozzle self-sealing shutoff device shall be capable of
sealing against a 2 foot (61.0 cm) head of grade 3 or 4 oil in accordance with MIL-PRF-7808 when not
engaged.
3.7.4 Low temperature leakage. There shall be no visible signs of leakage during the low
temperature leakage tests in accordance with 4.7.5. The adapter shall not crack nor show other
imperfections when subjected to an ambient temperature of -65°F (-54°C) for 24 hours. Following this
cold soak, connection and disconnection of the adapter and nozzle shall be accomplished with relative
ease and rapidity.
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