20. Rotation. The inserts are secured in a manner so as
30. POWER CONTACTS. Power contacts are used to
to prevent rotation or movement.
connect single conductor wire through connectors. The
power contacts in Table 3 and 4 range from size 12 thru
21. Interface Seal. All pin contact inserts will have a
23-22 and are of rear insertion, front release design.
resilient interface seal bonded to the front face to
Contacts are listed by size. Match the required size to
prevent water intrusion.
Socket and pin contact part numbers are listed along
22. Hermetic Receptacles. A glass-like material is used
with the corresponding color bands.
to insulate and seal the contacts and all pin contacts
will have an interface seal, The contacts are not
31. THERMOCOUPLE CONTACTS. Temperature
sensing systems utilize two dissimilar metal
conductors with matched lengths. When joined at the
23. INSERT ARRANGEMENT. The insert arrangement
point temperature will be sensed, a voltage difference
is the number and size of the contacts available by shell
develops. This voltage is directly proportional to the
size (Table 1 and 2).
temperature change. Thermocouple contacts are listed
in Table 5 and 6, they are: nickel-aluminum/silicon
(formerly alumel), nickel-chromium (formerly
24. INSERT CONFIGURATION. The insert
chromel), iron, or copper-nickel alloy (formerly
configuration is the manner in which the contacts are
constantan). Match the required size to the connector
placed within the insert in a standard configuration,
All arrangements identified in Table 1 and 2 are
pin contact part numbers are listed along with the
illustrated (Figure 4).
corresponding color bands.
25. CONTACTS. Contacts may be fixed or crimp
32. TOOLING. The procedures for attaching power
and thermocouple contacts to a single conductor wire
26. Fixed Contacts. Contacts in hermetically sealed or
is the same for this connector series and contacts. Select
the proper tooling for the specific contact part number
and solder-able, or feed through.
(Table 5 and 6) and refer to NAVAIR 01-1A-505-1,
WP 013 00 for correct assembly and crimp procedures.
27. Crimp Removable Contacts. Crimp removable
contacts may be used with all environment resisting
33. STEP STRIPPING FILTER LINE. Termination of
classes of connectors.
AWG-22 filter line in MIL-C-81511 connectors with size
22 contacts may require a step stripping procedure to
28. Contact Availability. Crimp contacts are supplied
reduce the insulation diameter in the grommet area to
with each connector unit package and consist of a full
allow clearance for the contact removal and insertion
compliment plus 1 spare per size for connectors of 26
tool (NAVAIR 01-1A-505-1 WP 009 00, see coaxial cable
contacts or less and those connectors with more than
26 contacts will have 2 spares of each size used.
Contacts may also be ordered in individual quantities
34. COAXIAL CONTACTS. When routing coaxial
cable through connectors, coaxial contacts are superior
to other coaxial cable shield termination methods. The
29. CONTACT APPLICATION. Contacts used in
shield integrity is maintained across the contact body.
MIL-C-81511 connectors are manufactured in
Socket coaxial contacts have a pin center contact. Pin
accordance with basic specification AS39029. When the
coaxial contacts have a socket center contact (Figure 8).
insert arrangement designates a particular size contact,
the appropriate military specification contact can be
35. CABLE AND COAXIAL CONTACT ASSEMBLY.
found in the applicable contact application table. The
To assemble the coaxial contacts to the applicable cable,
contact part number breakdown is illustrated in
identify the cable by part number. Select the proper
Figure 5 and 6. The Basic Identification Number (BIN),
contact by size (Table 7), and proper crimping tools
or last three digits of contact part number, matches
(Table 8 and 9).
the standard resistor color code (Figure 7). Pin contacts
are interchangeable between all series.
36. BACKSHELL REMOVAL AND INSTALLATION.
For removal and installation refer to WP 004 03.