Circular connectors
MIL-DTL-38999 is the standard circular on current military aircraft. 26482 and 5015 are still called out on older platforms and ground equipment, and 83723 is still called out on many aircraft and military vehicle harnesses. Rectangular D-sub and Micro-D too.
| Family | Part standards we quote | What it is |
|---|---|---|
| 38999 Series I | MS27466 · MS27467 · MS27468 · MS27656 | Bayonet coupling. Wall-mount and jam-nut receptacles, straight plugs. |
| 38999 Series II | MS27472 · MS27473 · MS27474 · MS27484 · MS27497 | Low-profile bayonet. MS27484 is the plug with EMI grounding fingers. |
| 38999 Series III | D38999/20, /24, /26 | Threaded triple-start coupling. Wall-mount receptacle, jam-nut receptacle, straight plug. |
| MIL-DTL-26482 | MS3116 plugs and MS3110, MS3111, MS3112, MS3114 receptacles (solder), MS3470 to MS3476 (crimp) | Miniature bayonet, smaller and lighter than 5015. |
| MIL-DTL-5015 | MS3106 · MS3450 to MS3459 | Threaded heavy-duty series. The MS345x numbers are the rear-release crimp versions. MS3106 now falls under SAE AS31061. |
| MIL-DTL-83723 | M83723/75 · /77 · /82 · /95 | Bayonet (/75, /77) and threaded (/82, /95) environment-resistant connectors with rear-release crimp contacts. |
| Rectangular | M24308/2 · /4 · M83513 | D-sub and Micro-D. |
- D38999/26
- Series III straight plug
- W
- Finish: olive drab cadmium over electroless nickel, aluminum shell
- D
- Shell size 15
- 35
- Insert arrangement 15-35: 37 contacts, size 22D
- S
- Socket contacts (P is pins)
- N
- Normal key. A to E are alternate key positions, so two same-size connectors mounted near each other can't be cross-mated.
Usually ordered with it: contacts, a backshell, a dust cap, sealing plugs for empty cavities and the insertion tool. Put them on the same RFQ and we'll match each one to the shell and insert.
Makes we source: Amphenol Aerospace, Souriau, ITT Cannon, TE Connectivity (Deutsch), Glenair, Positronic for rectangular.
Contacts and sealing plugs
Crimp contacts under MIL-DTL-39029. The dash number fixes the size, the plating and pin or socket, so send the full number.
| Contact size | Wire range | Where you see it |
|---|---|---|
| 22D | 22 to 28 AWG | High-density 38999 signal inserts |
| 20 | 20 to 24 AWG | General signal |
| 16 | 16 to 20 AWG | Power and heavier signal |
| 12 | 12 to 14 AWG | Power |
For 38999: M39029/58 pins fit every series. Sockets are M39029/56 for Series I and III, and /57 for Series II. For unused cavities, MS27488 sealing plugs keep the grommet sealed.
Makes we source: the connector makers above, plus TE Connectivity and Amphenol for loose contacts.
Backshells and accessories
SAE AS85049, formerly MIL-DTL-85049 (the M85049 part numbers on most drawings). Strain reliefs, EMI shield terminations, cable clamps and protective caps, sized to the connector series and shell.
Slash sheets we've quoted: /18, /38, /39, /48, /49, /51, /52, /95. If a backshell is called out by a maker's own part number instead, send that.
Makes we source: Glenair, Amphenol, and the backshell lines of the connector makers.
Wire and cable
Single-conductor airframe wire to SAE AS22759 (formerly MIL-DTL-22759 and MIL-W-22759 before that, still written M22759 on most part numbers), multiconductor shielded and jacketed cable to M27500, and M16878 equipment wire. By the foot or by the spool.
- M22759/11
- Slash sheet: sets the insulation, conductor and temperature rating
- 22
- Wire size, 22 AWG
- 9
- Color code, white (MIL-STD-681)
Spec pages: M22759/11, M22759/87, M27500, M16878/4.
Makes we source: TE Connectivity (Raychem), PIC Wire & Cable, Amphenol CIT (formerly Carlisle).
Heat shrink
Sleeving to SAE AS23053 (M23053 on the drawing). The slash sheet sets the material and shrink ratio, and the dash number sets size and color.
Slash sheets we've quoted: M23053/1, /4, /5, /11, /13. Cut lengths or full spools.
Makes we source: TE Connectivity (Raychem), and others where the spec allows.
Relays, breakers and switches
Aerospace relays and their M12883 sockets, MS3320 circuit breakers, and pressure and temperature switches. These are often called out by the maker's own part number. Send that.
Makes we source: Leach, TE Connectivity, Sensata (Klixon), Honeywell.
Lugs, ties and hardware
| Item | Part standards |
|---|---|
| Terminal lugs | MS20659 uninsulated · MS25036 insulated rings · MS25189 flag · MS35436 solder (inactive) |
| Cable ties | MS3367 (now SAE AS33671) |
| Screws and bolts | MS24693 · MS35206 · MS51957 · NAS1801 |
| Nuts and washers | MS21042 · NAS1149 · NAS620 |
Lugs and ties: Burndy, Panduit, Thomas & Betts (ABB), TE Connectivity. Screws, nuts and washers come from qualified fastener manufacturers and their authorized distributors.
Tools
M22520 crimp tools and the positioners for each contact, and M81969 insertion and extraction tools. Tell us the contact part number and we'll quote the tool and positioner that crimp it.
Makes we source: Daniels (DMC) and other M22520 and M81969 qualified tool makers.
Passives
Capacitors, resistors and other board-level parts, usually ordered by the manufacturer's part number.
Makes we source: KEMET, Vishay, Littelfuse.
Where the parts come from
New parts, bought for your order
We buy from sources that can trace each part back to the company that made it. Every shipment comes with a certificate that the parts meet their specification, naming the maker, part number and batch, plus the maker's own certificate when one is issued.
Obsolete parts
When a part is no longer available from the usual sources, we say so on the quote. Buying from the open market happens only with your approval, after we've vetted the source and the paperwork.
Approved sources
If your drawing or contract limits which makers or sources you can accept, put it on the RFQ and we'll quote only those.
Independent, not franchised
We're an independent distributor. Naming a maker on this page means we buy their parts, not that we're one of their franchised distributors.
Working from a spec number? Browse parts by spec number.
Have a part number?Send it with a quantity. If it's built to a military or aerospace spec and isn't on this page, send it anyway.
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