![MS3108A20-22S - U.S. military standard connector](/meng_k/products_pic/image/20221201162771147114.jpg)
## MS Series threaded electrical connectors

> The MS Series threaded electrical connectors fully comply with the technical requirements of the U.S. military specification MIL-DTL-5015. This series of electrical connectors adopts threaded connection mode, and the contact body adopts welded structure, which has the advantages of vibration resistance and shock resistance, and can be interchanged and docked with similar foreign products such as Amphenol. Therefore, this series of products are widely used in aviation, electronics, rail transit, machine tool numerical control systems and other fields.

#### 1、Materials and Finish

| part      | material                    | finish                                             |
|:--------- |:--------------------------- |:-------------------------------------------------- |
| Shell     | Aluminum alloy              | army green cadmium plating / galvanized assivation |
| Insulator | PPS plastic/Silicone rubber |                                                    |
| Contact   | Copper alloy                | Gold/Silver plating                                |

#### 2、Technical performance

- Insulation resistance：≥5000MG（temperature 25°C）

- Operating temperature：-55°C~125°C

- life：≥500 mating

- Dielectric Withstanding Voltage：2000V

- Operating Voltage：AC-500V / DC-400V

#### 3、Contacts body electrical parameters

- Contact insertion force

| Contact Size | max(kg) | avg(kg) | min(kg) |
|:------------ |:------- |:------- |:------- |
| 16#          | 1.36    | 0.96    | 0.11    |
| 12#          | 2.26    | 1.58    | 0.22    |
| 8#           | 4.53    | 3.17    | 0.34    |
| 4#           | 6.8     | 4.76    | 0.45    |
| 0#           | 9.97    | 6.35    | 0.90    |

- Contact diameter & Rated current

| Contact Size | Solder Well Diameter(m) | Contact Diameter(mm) | Rated Current(A) |
|:------------ |:----------------------- |:-------------------- |:---------------- |
| 16#          | Φ 7                     | Φ 1.6                | 13               |
| 12#          | Φ 2.8                   | Φ 2.4                | 23               |
| 8#           | Φ 5.3                   | Φ 3.6                | 46               |
| 4#           | Φ 8                     | Φ 5.7                | 80               |
| 0#           | Φ 11.8                  | Φ 9.1                | 150              |

- Contact resistance test current, allowable voltage dropt

| Contact Size | Test Current(A) | Max Millivolt dropt |
|:------------ |:--------------- |:------------------- |
| 16#          | 20              | 21                  |
| 12#          | 35              | 20                  |
| 8#           | 60              | 12                  |
| 4#           | 110             | 10                  |
| 0#           | 200             | 10                  |

- Contact Wire Specifications

| Contact Size | A.W.G     | Wire(mm²) | Outside Diameter(mm) |
|:------------ |:--------- |:--------- |:-------------------- |
| 16#          | 22# ~ 16# | ≤1.3      | Φ1.7~3.3             |
| 12#          | 14# ~ 12# | ≤3.5      | Φ2.9~4.3             |
| 8#           | 10# ~ 8#  | ≤8.0      | Φ4.2~6.4             |
| 4#           | 6# ~ 4#   | ≤22.0     | Φ7.0~9.4             |
| 0#           | 2# ~ 0#   | ≤50.0     | Φ10.6~14.0           |

#### 4、Order-Number & Sample

_Example：MS3106A20-27PW_

| MS        | 3106            | A          | 20-27              | P             | W               |
|:--------- |:--------------- |:---------- |:------------------ |:------------- |:--------------- |
| Main Code | Connector Style | Shell Type | Insert Arrangement | Contact Style | Insert Rotation |

##### 1. Main Code

- MS — Series Code

##### 2. Connector Style

- 3100 — Wall mount square flange receptacle

- 3101 — Cable connecting receptacle

- 3102 — Box mount square flange receptacle

- 3106 — Straight Plug

- 3108 — 90 Degree Plug

##### 3. Shell Type

- A — Solid Shell

- B — Split Shell

##### 4. Contact Style

- P — Pin Contacts

- S — Socket Contacts

##### 5. Insert Rotation

- N — normal（no mark）

- W、X、Y、Z