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MIL-C-83723 Revision E, May 15, 1992
Complete Document
Superseded By: MIL-DTL-83723
Includes all amendments and changes through Supplement 1, June 30, 1992
Additional Comments: RENUMBERED AS MIL-DTL-83723
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This specification covers the general requirements for environment resisting, circular, electrical connectors and their associated contacts and accessories. These connectors shall utilize crimp or solder contacts and be capable of operation within the specified range (see

Basic series of connectors are as follows:

a. Series I - Type B bayonet coupling. Transferred to MIL-C-26482 series II, as applicable (see 6.7.1).

b. Series II - Type T threaded coupling, intermateable with MIL-C-5015. (Inactive for new design, use: MS3450, MS3451, MS3452, MS3456, and MS3459 of MIL-C-5015, as applicable.)

c. Series III - Type T threaded and type B bayonet coupling connectors, intermateable with applicable MIL-C-26500 connectors (see section 6). In addition, requirements for hermetic receptacles with nonremovable contacts are included. The hermetic receptacle shall mate with the appropriate bayonet or threaded type connector and shall meet the same temperature requirements. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: 2750 Logistics and Operations Group, Electronics Support Division (2750 LOG/ES), Gentile Station, 1060 Hamilton St, Dayton, OH 45444-5400, by using the Standardization Document Improvement Proposal (DD form 1426) appearing at the end of this document or by letter.

The classes and types (either bayonet or threaded coupling) are as follows:
Class   Type     Series          Description

A       B        III             Aluminum shell, anodize,
        T        II, III         nonconductive finish, fluid
                                 resistant insert.

F           Cancelled, superseded by class R.
G       B        III             Stainless steel shell, passivated,
        T        II, III         fluid resistant insert.

H       B        II              Steel shell, tin finish, hermetic,
        T        II, III         fluid resistant interfacial sealing

K       T        II, III         Stainless steel shell, passivated,
                                 fluid resistant insert, firewall.

N       T        III             Plugs, electrodeposited nickel finish,
                                 fluid resistant insert, firewall, RFI
                                 grounding, self locking.  Receptacles,
                                 electrodeposited nickel finish, hermetic,
                                 fluid resistant insert, firewall.

R       B        III             Aluminum shell, electroless
        T        II, III         nickel, conductive finish,
                                 fluid resistant insert.

S       T        III             Stainless steel shell, passivated,
                                 fluid resistant insert, firewall
                                 (plug and receptacle) RFI grounding,
                                 self locking (plug).

W       B        III             Aluminum shell, cadmium,
        T        II, III         conductive finish 500 hours
                                 salt spray, fluid resistant insert.

Y       B        III             Hermetic, stainless steel shell,
        T        III             passivated, fluid resistant interfacial
                                            sealing gasket.

The connector classes physical feature will be specified in table I. TABLE I. Connector classes physical feature.
Class           A     G     H     K     N     N     R      S      W     Y
                                         Fwall  Herm
  Series II        X     X     X     X                 X             X
  Series III       X     X     X     X     X     X     X      X      X     X
   coupling        X     X     X     X                 X             X     X
   coupling        X     X     X     X     X     X     X      X      X     X
   hermetic                    X                 X                         X
  Crimp            X     X           X     X           X      X
   fingers                                 X     X            X
  Firewall                           X     X                  X
  ♀C              200   200   150   200   200   200   200    200    175   200
   coupling nut
   series III,    X 1/                                X 1/   X 1/

1/  See the applicable slash sheets in the connector specifications for
    self-locking feature availability.

Shell sizes and insert arrangements will be as specified in MIL-STD-1651 for series II and MIL-STD-1554 for series III.

For all series II and III, positions N through 5, the insert position is the angular position of the insert relative to the master key or keyway of the shell. For series III, positions 6 through Y, the centerline of the insert is aligned on the centerline of the master key/keyway and the angular positions of the minor key/keyway are rotated in reference to the master key/keyway of the shell. Insert positions other than normal shall be indicated by the letter shown in MIL-STD-1651 for series II, and by the numeral or letter shown in MIL-STD-1554 for series III.

Accessories shall consist of the items as specified in the supplement to this document.