| PartNumber | MS3101E28-8P | MS3101E28-5S | MS3101E28-8S |
| Description | Circular MIL Spec Connector ER 12C 10#16 2#12 PIN RECP LIN | Circular MIL Spec Connector | Circular MIL Spec Connector |
| Manufacturer | Amphenol | Amphenol | Amphenol |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular MIL Spec Connector |
| Number of Positions | 12 Position | 5 Position | 12 Position |
| Insert Arrangement | 28-8 | 28-5 | 28-8 |
| Contact Gender | Pin (Male) | Socket (Female) | Socket (Female) |
| MIL Type | MIL-DTL-5015 | MIL-DTL-5015 | MIL-DTL-5015 |
| Product | Receptacles | Receptacles | Receptacles |
| Shell Size | 28 | 28 | 28 |
| Shell Style | In-Line | In-Line | In-Line |
| Series | MS | MS | MS |
| Brand | Amphenol Industrial | Amphenol Industrial | Amphenol Industrial |
| Shell Plating | Olive Drab Chromate over Cadmium | Olive Drab Chromate over Cadmium | Olive Drab Chromate over Cadmium |
| Product Type | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular MIL Spec Connector |
| Subcategory | Circular Connectors | Circular Connectors | Circular Connectors |