MIL-DTL-22992G
3.4.3 Coupling connection. Plugs shall be connected or coupled to their mating receptacle by means
of coupling rings. The coupling threads shall be as specified (see 3.1). All coupling rings shall be knurled
or fluted.
3.4.3.1 Classes C, J and R. Coupling rings shall be designed so that the pin and socket contacts will
fully engage or disengage as the ring is respectively tightened or loosened. The coupling ring shall jack
against the adapter during connector unmating. Coupling shall occur in the following sequence:
polarization and engagement of shells, engagement of coupling threads, engagement of contacts. The
uncoupling sequence shall be in the reverse order.
3.4.3.2 Class L. The coupling of class L connectors shall occur in the following sequence:
Polarization and engagement of the mating shells; engagement of the grounding and neutral contacts;
.019 inch (.483 mm) minimum effective engagement of the phase contacts; and engagement of the
coupling threads. The uncoupling sequence shall be in reverse order.
3.4.4 Polarization. Polarization of the plug with its receptacle shall be accomplished by five integral
keys on the male connector and matching keyways on the female connector and shall be designed so
that it cannot possibly interfere with the functioning of the coupling threads. The integral keys and
keyways shall render the mating of the plug and receptacle in more than one position impossible. The
mating keys and keyways shall be substantially rectangular in cross section.
3.4.4.1 Class L. Class L shells shall be supplied with the main key (or keyway) rotated from the
normal position, as specified (see 3.1). The relationship between the four small minor keys (or keyways)
and the centerline through the main key (or keyway) in the nominal position shall remain constant.
3.4.5 Screw threads. Coupling threads of connectors, stowage receptacles and protective covers
shall be either 1P- 2L-DS or 1428P- .2857L-DS, class 2A or 2B of MIL-STD-1373, as specified (see 3.1).
All adapter threads shall conform to FED-STD-H28 and shall be as specified (see 3.1). Screw threads
shall be checked after plating by means of ring and plug gages only, in accordance with FED-STD-H28.
Out-of-roundness beyond the tolerances of MIL-S-7742 or MIL-STD-1373 is not objectionable if the
threads can be checked without forcing of the thread gages. Screw threads may be relieved provided
such relief does not interfere with the proper performance of the screw threads.
3.4.5.1 Lubrication. All class 2B threads shall be coated with a lubricant conforming to MIL-PRF-
23827.
3.4.6 Class J connectors. Class J connectors shall be provided with a grommet to support individual
conductors and shall be held in position by the appropriate cable sealing adapter (style 2) (see 3.4.8.1).
3.4.7 Class L connectors. Class L grounding connectors shall have all system grounding contacts
electrically connected to their shells without interfering with proper engagement or performance of the
connectors. All shells and associated hardware of grounding assemblies shall be of the conductive (C)
finish, and only key (or keyway) positions 4, 5, or 6 as applicable, shall be used. All shells and hardware
of nongrounding assemblies shall have a nonconductive (N) finish.
3.4.8 Accessories.
3.4.8.1 Adapters, cable sealing. Adapters shall be as specified in MS17342, MS90569,
SAE-AS85049/3, SAE-AS85049/5 and SAE-AS85049/59. The adapters shall not seize the coupling ring
and shall be designed for bottoming out when assembled to the connector.
12
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business