MIL-DTL-25677E
3.3.2 Metals. The use of materials which minimize the weight of adapters, nozzles, pressure caps,
and dust caps is encouraged. Items made of passivated stainless steel and anodized aluminum are
acceptable if they meet the requirements of this specification.
3.3.2.1 Aluminum alloy. Aluminum alloy capable of meeting them flame test requirement specified in
3.3.2.2 Stainless steel. Stainless steel alloy capable of meeting the flame test requirement specified
in 3.7.11.
3.3.3 O-rings. O-rings shall be in accordance with SAE-AS3209 or SAE-AS29561 and shall be
compatible with oil in accordance with MIL-PRF-7808, MIL-PRF-8188, and MIL-PRF-23699.
3.3.4 Seals. Seals shall be compatible with oil in accordance with MIL-PRF-7808, MIL-PRF-8188,
and MIL-PRF-23699.
3.3.5 Wire rope. Wire rope shall be in accordance with MIL-DTL-83420/2, 1/16 diameter, type 1,
composition B.
3.3.6 Hook. Hook shall be in accordance with SAE-AS29523-1.
3.3.7 Dissimilar metals. When dissimilar metals are used in intimate contact with each other,
protection against electrolysis and corrosion shall be provided. Dissimilar metals such as brass, copper,
or steel (except corrosion-resisting steel passivated in accordance with SAE-AMS2700) shall not be used
in intimate contact with aluminum or aluminum alloy. Protective measures for dissimilar metals shall be in
accordance with MIL-STD-889. Magnesium shall not be used.
3.4 Design. The oil servicing components shall consist of:
a.
Adapter incorporating a self-sealing shut-off device in accordance with MIL-DTL-25677/1.
b.
Dust cap in accordance with MIL-DTL-25677/2.
c.
Nozzle in accordance with MIL-DTL-25677/3.
d.
Pressure cap in accordance with MIL-DTL-25677/4.
3.4.1 Adapter. The adapter shall be designed to mount on a section of aircraft structure or engine to
connect to, and provide for a quick separation from, a pressure servicing lubricating oil nozzle. A positive
locking means shall be provided when the adapter is connected to the nozzle. The adapter and nozzle,
when uncoupled, each shall automatically seal its respective uncoupled end against spillage of fluid.
3.4.2 Pressure cap The pressure cap shall mount on the adapter and provide seal redundancy as a
secondary seal. The pressure cap shall be capable of being securely mounted or tethered to the adapter.
3.4.3 Dust cap. The dust cover shall mount on the adapter and provide a seal. The dust cap shall
be capable of being securely mounted or tethered to the adapter.
3.4.4 Pressure and dust cap. The pressure cap and dust caps shall be a female type that covers the
entire open end of the adapter to minimize entry of dust, dirt, and water. The pressure and dust caps
shall have a wire rope which can be attached to the adapter by using a sleeve or surrounding aircraft
structure with a hook as specified in MIL-DTL-25677/2 and MIL-DTL-25677/4.
3.4.5 Adapter, pressure cap and dust cap. The adapter, pressure cap and dust cap shall function
over a temperature range of -65°F to +275°F (-54°C to +135°C).
3.4.6. Nozzle The nozzle shall function over a temperature range of -65°F to +160°F (-54°C to
+71°C).
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