For example, it is intended that an AWG size 12 wire
17. INSERT CONFIGURATION. The insert
be soldered to at least a size 12 contact; and an AWG
configuration is the manner in which contacts are
size 6 wire should be soldered or crimped if applicable
placed within the insert in a standard configuration.
to a size 4 or size 6 contact.
The insert configuration arrangements are for classes
C, J, and R are in accordance with MIL-STD-1651 and
23. CONTACT BUSHINGS. When required for insert
found by using Table 2. Read down the table to the
arrangements (as specified in section 70 of the
appropriate shell size. Reading from left to right, find
appendix to MIL-DTL-22992), applicable contact
the total number of contacts in the connector and the
bushings conforming to SAE-AS33481 are supplied
size of each. Use a caliper to measure the contact size.
with the contacts. Refer to Table 3 for detailed contact
Match the size in the chart below. Continue reading
across the table to find the insert configuration
segment. If the total number of contacts within a given
24. COUPLING CONNECTION. Plugs are connected
shell size is the same and the size of those contacts is
or coupled to their mating receptacle by means of
the same, an illustration is provided to identify the
coupling rings. The connectors have modified Acme
correct configuration (see Figure 12).
threaded couplings threads, which are characterized
by six large threads per inch. Coupling rings are
knurled or fluted.
The socket inside diameter will be from 0.002
25. COUPLING RINGS. Coupling Rings for Classes C,
to 0.005 inch larger than the pin outside
J and R, are designed so that the pin and socket contacts
diameter. The larger the contact, the larger the
will fully engage or disengage as the ring is
respectively tightened or loosened. The coupling ring
shall jack against the adapter during connector un-
18. CONTACT STYLE. Use (P) for pins and (S) for
mating. Coupling shall occur in the following sequence
sockets for this segment of the part number.
coupling threads, engagement of contacts. The
19. ALTERNATE POSITION. For Class C, J, and R
uncoupling sequence is in the reverse order.
Alternate Positions refer to Figure 13. Use the master
key as the zero degree reference point. Using a
protractor, measure the number of degrees of insert
receptacle is accomplished by five integral keys on the
rotation within the shell. Zero degrees of rotation, or
male connector and matching keyways on the female
the Normal insert position has the letters on the face
connector and is designed so that it cannot possibly
of the connector level relative to the master key. This
interfere with the functioning of the coupling threads.
segment is left blank if there is no rotation.
The integral keys and keyways render the mating of
the plug and receptacle in more than one position
20. CONTACTS. Contact for Class: C, J and R are fixed,
impossible. The mating keys and keyways are
removable, non-removable and solder-able. Refer to
rectangular in cross section.
Table 3 for detailed contact information.
27. SCREW THREADS. Coupling threads of
21. Contact Insertion and Removal. Pin and socket
contacts, sizes 1/0, 4, and 8 may be designed so that
are: 1P-2L-DS or 1428P-2857L-DS, Class 2A or 2B of
they can be readily removed from their inserts for
MIL-STD-1373, commonly referred to as Acme type
soldering to their conductors and readily assembled
after the soldered connection has been made. Contacts,
sizes 12 and 16, are rigidly mounted in their inserts
28. LUBRICATION. All class 2B threads shall be coated
and not removable. Inserts containing non-removable
with a lubricant conforming to MIL-PRF-23827.
contacts shall not be subject to damage by soldering
under an acceptable soldering process.
29. CLASS J CONNECTORS. Class J connectors shall
be provided with a grommet to support individual
22. WIRE SIZES TO BE USED WITH CONTACTS. It
conductors and shall be held in position by the
is intended that the wire attached to each connector
appropriate cable sealing adapter.
contact should be of the AWG size (or smaller
diameter), corresponding to the contact size number.