Use the EMech WorkBench tool to build or decode supported MIL-DTL-26482 Series 2 connector part numbers. The current builder covers active Series 2 environment-resisting crimp sheets and class N hermetic sheets represented in its data. It includes supported shell styles, insert arrangements, contact fields, and accessory information.
Open the MIL-DTL-26482 Series 2 builder, enter an existing part number to decode it, or select fields to assemble a candidate part number. Options depend on the chosen shell style and the site's available reference data.
Part-number fields and options
Example, with spaces added to make the fields easier to see:
MS3470 L 24 - 61 P W
The spaces are visual separators. In a part number, the fields are normally written together as MS3470L24-61PW.
| Field | Example | Meaning and options in the current Series 2 builder |
|---|---|---|
| MS number / shell style | MS3470 | The MS detail sheet and shell style. See the shell-style table below. |
| Class | L | Shell material and finish. In Series 2 the class is the finish; there is no separate finish field. See the class table below. |
| Shell size | 24 | The shell-size number itself, 8 through 24 in steps of 2. There is no letter code. |
| Separator or termination | - | Environment-resisting classes put a dash here. Hermetic class N puts the termination letter D here instead. |
| Insert arrangement | 61 | The contact layout, from MIL-STD-1669A. Options depend on shell size. |
| Contact style | P | Contact gender and supply. See the contact-style table below. |
| Insert position | W | The angular position of the insert in the shell. The normal position takes no letter. |
A hermetic example is MS3477N16D26PW: MS3477, class N, shell size 16, termination D, insert arrangement 26, pin contacts P, insert position W. It has no dash.
Use the builder's field labels and decoder rather than a remembered example, because the valid fields depend on the exact MS sheet and class.
Shell styles in the current builder
| MS number | Family | Shell style |
|---|---|---|
MS3470 | Environment resisting | Narrow-flange receptacle, crimp type |
MS3471 | Environment resisting | Cable-connecting receptacle, crimp type |
MS3472 | Environment resisting | Wide-flange receptacle, crimp type |
MS3474 | Environment resisting | Rear-mount jam-nut receptacle, crimp type |
MS3475 | Environment resisting | RFI-shielded plug, crimp type |
MS3476 | Environment resisting | Plug, crimp type |
MS3477 | Hermetic, class N | Box-mount receptacle, hermetic, solderless |
MS3479 | Hermetic, class N | Rear-mount jam-nut receptacle, hermetic, solderless |
Class codes currently offered
| Class | Current dataset description |
|---|---|
A | Aluminum, hard anodic (nonconductive), grommet seal; 200 °C |
K | Zinc-nickel alloy, black; conductive, corrosion and fluid resistant; 175 °C |
L | Electroless nickel; conductive, fluid resistant; replaces class E; 200 °C |
T | Nickel fluorocarbon polymer; conductive, corrosion and fluid resistant; 175 °C |
W | Cadmium plate, olive drab; conductive, corrosion and fluid resistant; 175 °C |
D | Pure electrodeposited aluminum, conductive. Named in the sheet titles but not defined in the base specification: verify before use |
N | Hermetic: tin-plated ferrous alloy shell, crimp termination, conductive; 175 °C |
Classes V, AA and AB are defined in the base specification for Series 2 but are not named on the sheets, so the builder does not offer them.
Contact-style codes
| Code | Family | Meaning in the current dataset |
|---|---|---|
P | Environment resisting | Pin contacts, supplied with the arrangement's standard contacts |
S | Environment resisting | Socket contacts, supplied with the arrangement's standard contacts |
A | Environment resisting | Less pin contacts: order the contacts separately |
B | Environment resisting | Less socket contacts: order the contacts separately |
P | Hermetic, class N | Pin contacts, fixed in the insert; the wires crimp to separate SAE-AS39029/22 sockets |
Class N receptacles take only size 20 and size 16 contacts, so arrangements with size 12 contacts are not offered in class N.
Insert-position codes
| Code | Position |
|---|---|
N | Normal (no letter in the part number) |
W | Alternate position W |
X | Alternate position X |
Y | Alternate position Y |
Z | Alternate position Z |
In an alternate position the pin insert is turned clockwise from the shell's master key or keyway, and the socket insert counterclockwise. The angle depends on the insert arrangement, and not every arrangement offers every position; the builder lists only the positions the selected arrangement has.
What the builder shows
| Detail | What the builder shows |
|---|---|
| Part number | The assembled part number and its field-by-field breakdown |
| Contacts | The contacts for the selected arrangement and contact style |
| Mating connectors | Candidate mates within Series 2; see Finding a mating connector |
| Accessories | M85049 backshells and the MS3180 and MS3181 protective covers; class N receptacles have no rear accessory thread, so no backshell fits them |
| Parts list | A list of collected part numbers, as a convenience for design and supplier work |
Independently verify part numbers and quantities before release or purchase.
Current scope and exclusions
| Item | Current state |
|---|---|
| Source documents | MIL-DTL-26482J with Amendment 2, the MS sheets above, and MIL-STD-1669A arrangement data |
| Included | The active Series 2 sheets: environment-resisting MS3470, MS3471, MS3472, MS3474, MS3475 and MS3476, plus class N hermetic MS3477 and MS3479 |
| Not included | Series 1, inactive sheets, the class H solder hermetic sheets, and the canceled MS3473 |
| Mating list | Series 2 only; cross-series mating candidates are not listed |
A missing option should not be interpreted as proof that the specification disallows it. Check the exact sheet and interface requirements for the intended connection.
Verify before design release or purchase
The builder is a reference aid, not a compliance determination. Check the latest applicable MIL-DTL-26482 revision, the exact MS detail sheet, insert-arrangement source, contact specification, and manufacturer documentation. Confirm the connector's complete part number, configuration, and availability with the supplier. The site does not currently provide live price or lead-time data.