MIL-DTL-28840/21G
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for information only.
3. Shell sizes are provided within parentheses for information and are not a part of the designator.
4. Dimensions apply after plating.
5. Normal mating key position shown. Alternate key positions in accordance with MIL-DTL-28840.
6. Assembly shall be made of a connector and backshell of the same material.
FIGURE 1. Dimensions and configuration Continued.
REQUIREMENTS:
Dimensions and configuration: See figure 1.
Classes: DJ, DJS, PJ, TJ, TJS, ZJ and ZJS.
Insert arrangements: See the figure of MIL-STD-1698 corresponding to the desired shell size.
Contacts: Pin or socket, crimp type, styles P, S, D, E, F or G, in accordance with MIL-DTL-28840.
Shell polarization: 1 thru 6, key position.
Marking: Part or Identifying Number (PIN) on shell.
Mating counterpart: Mating connectors in accordance with MIL-DTL-28840/16, /17, /18, /19, /26, /28
and /29.
Installation and removal tool: In accordance with MIL-I-81969/33 and /34.
PIN's shown indicate aluminum alloy hardware. If corrosion resistant steel parts are required,
the connector and accessory PIN's must be changed to designate corrosion resistant hardware.
PIN example:
M28840/21
C
G
I
A A
P
1
Specification sheet number
Key position
1, 2, 3, 4, 5, 6 position
Contact designator
Classes
Code letter
Backshell style
D
C
DS
E
Backshell size designator
PJ
G
TJ
M
Insert arrangement
TJS
V
Shell size
ZJ
U
ZJS
X
RESTRICTIONS:
Classes DJ and DJS are inactive for NAVSEA new design, unless approved by NAVSEA.
4
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