SOURIAU 8D Series MIL-DTL-38999 Connector Selection Guide
SOURIAU 8D Series MIL-DTL-38999 Connector Selection Guide
The SOURIAU 8D Series is a family of high-reliability circular connectors designed for aircraft, military vehicles, communication systems, radar equipment and other applications exposed to vibration, moisture, corrosion and electromagnetic interference.
Manufactured under the Eaton SOURIAU brand, the 8D Series corresponds to the threaded-coupling version of MIL-DTL-38999 Series III. It is also available in configurations associated with EN3645, BACC63, VG95319 and CECC requirements. The connector uses a self-locking threaded coupling, scoop-proof shell design, visual mating indication and 360-degree shielding to maintain a secure connection in harsh environments.
SOURIAU 8D Series Key Specifications
Actual electrical and environmental ratings depend on the selected material, plating, insert arrangement and contact type.
| Parameter | SOURIAU 8D Series options |
|---|---|
| Connector standard | MIL-DTL-38999 Series III |
| Other supported standards | EN3645, BACC63, VG95319, CECC |
| Coupling method | Self-locking threaded coupling |
| Mating action | Approximately 1¼ turns |
| Shell styles | Square flange receptacle, in-line receptacle, jam nut receptacle, cable plug |
| Shell sizes | 09, 11, 13, 15, 17, 19, 21, 23 and 25 |
| Shell materials | Aluminum, composite, stainless steel, titanium and bronze |
| Contact types | Signal, power, coax, twinax, quadrax and optical |
| Standard contact sizes | #22D, #20, #16, #12, #8 and #4 |
| Contact termination | Crimp, PCB tail and selected special terminations |
| Polarization | N, A, B, C, D and E |
| Durability | Typically 500 mating cycles, depending on configuration |
| Operating temperature | Up to −65°C to +200°C for selected versions |
| Environmental protection | Sealed harsh-environment construction; rating depends on configuration |
| Shielding | 360-degree EMI shielding |
| Insert arrangements | 54 QPL layouts available in accordance with MIL-STD-1560 |
Main Applications
Aerospace and Avionics
The 8D Series is used for flight controls, navigation systems, radar, communication equipment, power distribution units and onboard electronic systems. Composite-shell versions can help reduce aircraft harness weight.
Military Vehicles
Self-locking threaded coupling, shielding and environmental sealing make the 8D Series suitable for armored vehicles, tactical communication systems, electronic control units and vehicle-mounted radar.
UAV and Unmanned Systems
High-density signal layouts support sensors, cameras, flight controllers and communication payloads. Composite versions are suitable where connector weight is a major selection factor.
Naval and Marine Equipment
Stainless steel, titanium and corrosion-resistant finishes are available for equipment exposed to salt spray, moisture and repeated outdoor operation.
Engines and High-Temperature Equipment
Selected stainless steel and titanium configurations can be used around engines, power units and other areas requiring high mechanical strength and elevated-temperature performance.
Common SOURIAU 8D Models
| Part number | Shell style | Shell size | Finish or material | Contact type |
|---|---|---|---|---|
| 8D011K35PN | Square flange receptacle | 11 | Passivated stainless steel | Pin |
| 8D713K04SN | Jam nut receptacle | 13 | Passivated stainless steel | Socket |
| 8D015K97PN | Square flange receptacle | 15 | Passivated stainless steel | Pin |
| 8D509F35SC | Cable plug | 09 | Nickel-plated aluminum | Socket |
| 8D517W75PN | Cable plug | 17 | Olive drab cadmium aluminum | Pin |
| 8D717S06PEL | Jam nut receptacle | 17 | Nickel-plated stainless steel | Pin |
| 8D521W35PN | Cable plug | 21 | Olive drab cadmium aluminum | Pin |
| 8D523S32PN | Cable plug | 23 | Nickel-plated stainless steel | Pin |
| 8D723S53PDL | Jam nut receptacle | 23 | Nickel-plated stainless steel | Pin |
For example, 8D713K04SN is a shell-size 13 jam nut receptacle with four socket contacts, passivated finish, 500 mating cycles and a specified operating range of −65°C to +200°C.
SOURIAU 8D vs 8STA vs 851 Series
| Feature | SOURIAU 8D | SOURIAU 8STA | SOURIAU 851 |
|---|---|---|---|
| Main standard | MIL-DTL-38999 Series III | Motorsport and compact aerospace platform | MIL-DTL-26482 Series I |
| Coupling | Self-locking thread | Bayonet | Bayonet |
| Main advantage | High reliability, shielding and broad configuration range | Compact size and low weight | Cost-effective, proven circular connection |
| Typical applications | Aircraft, military, naval and radar | Motorsport, UAV and compact airborne equipment | Aircraft, military and industrial equipment |
| Best selection condition | Maximum environmental and EMI performance | Size and weight are critical | Moderate-density bayonet connection is sufficient |
The 8D Series should be selected when MIL-DTL-38999 Series III compatibility, threaded self-locking coupling, high-density contacts or strong EMI performance is required. The 8STA Series is better suited to smaller and lighter systems, while the 851 Series is commonly used for MIL-DTL-26482 Series I applications.
SOURIAU 8D Part Number Example
FAQ
Is the SOURIAU 8D Series the same as MIL-DTL-38999 Series III?
The 8D Series is SOURIAU’s commercial and qualified product family based on the MIL-DTL-38999 Series III interface. Qualified configurations can be cross-referenced to D38999 part numbers, but material, plating, insert arrangement, polarization and qualification status must still be checked.
Can SOURIAU 8D connectors mate with other D38999 Series III brands?
Connectors manufactured to the same MIL-DTL-38999 Series III interface may be mechanically intermateable when shell size, insert arrangement, contact gender and polarization match. Qualification, finish compatibility and application approval must be verified before substitution.
What is the difference between P and S in an 8D part number?
P identifies pin contacts, while S identifies socket contacts. These letters describe the contacts and do not indicate whether the connector shell is a plug or receptacle.
What information is required for a SOURIAU 8D quotation?
Provide the complete part number, required quantity, target delivery date and any documentation requirements. If the part number is incomplete, provide the shell style, shell size, insert arrangement, contact gender, polarization, material, plating and required contacts.
DataStorageIC supplies SOURIAU 8D Series connectors for aerospace, military and industrial applications. Contact us with the complete part number and quantity to confirm specifications, availability, lead time and quotation.
