| PartNumber | MS3101A28-21P | MS3101A28-21P-RES | MS3101A28-21PW |
| Description | Circular MIL Spec Connector 37P #16 PIN CONTACTS | Circular MIL Spec Connector ER 37C 37#16 PIN RECP | Circular MIL Spec Connector AB 37C 37#16 PIN RECP |
| Manufacturer | Amphenol | Amphenol | Amphenol |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular MIL Spec Connector |
| RoHS | N | N | - |
| Number of Positions | 37 Position | - | - |
| Insert Arrangement | 28-21 | - | - |
| Contact Gender | Pin (Male) | - | - |
| MIL Type | MIL-DTL-5015 | - | - |
| Product | Receptacles | - | - |
| Shell Size | 28 | - | - |
| Shell Style | In-Line | - | - |
| Series | MS 5015 | - | - |
| Brand | Amphenol Industrial | Amphenol Industrial | Amphenol Industrial |
| Shell Plating | Olive Drab Chromate over Cadmium | - | - |
| Product Type | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular MIL Spec Connector |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Circular Connectors | Circular Connectors | Circular Connectors |
| Tradename | 5015 | - | - |
| Part # Aliases | MS31O1A28-21P U61-168128-21P | - | - |
| Unit Weight | 3.781369 oz | 4 oz | 3.781369 oz |