| PartNumber | MS3101F28-6S | MS3101F28-4S | MS3101F28-6P |
| Description | Circular MIL Spec Connector ER 3C 3#4 SKT RECP | Circular MIL Spec Connector Connectors, Interconnects - CONN PLUG 9POS FREE HNG W/SCKT - Circular | Circular MIL Spec Connector ER 3C 3#4 PIN PL UG LINE |
| Manufacturer | Amphenol | Amphenol | Amphenol |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular MIL Spec Connector |
| RoHS | N | - | N |
| Brand | Amphenol Industrial | Amphenol Industrial | Amphenol Industrial |
| 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 |
| Number of Positions | - | 9 Position | 3 Position |
| Insert Arrangement | - | 28-4 | 28-6 |
| Contact Gender | - | Socket (Female) | Pin (Male) |
| MIL Type | - | MIL-DTL-5015 | MIL-DTL-5015 |
| Product | - | Receptacles | Receptacles |
| Shell Size | - | 28 | 28 |
| Shell Style | - | In-Line | In-Line |
| Series | - | MS 5015 | MS |
| Shell Plating | - | Olive Drab Chromate over Cadmium | Olive Drab Chromate over Cadmium |
| Tradename | - | 5015 | - |
| Part # Aliases | - | MS31O1F28-4S | - |