| PartNumber | MS3101A40-56PY-RES | MS3101A40-10S | MS3101A40-1P |
| Description | Circular MIL Spec Connector ER 85C 85#16 SKT RECP LINE | 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 |
| Series | D38999 III | MS | MS |
| Brand | Amphenol | Amphenol Industrial | Amphenol Industrial |
| Product Type | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular MIL Spec Connector |
| Subcategory | Circular Connectors | Circular Connectors | Circular Connectors |
| Tradename | 38999 | - | - |
| Number of Positions | - | 29 Position | 30 Position |
| Insert Arrangement | - | 40-10 | 40-1 |
| Contact Gender | - | Socket (Female) | Pin (Male) |
| MIL Type | - | MIL-DTL-5015 | MIL-DTL-5015 |
| Product | - | Receptacles | Receptacles |
| Shell Size | - | 40 | 40 |
| Shell Style | - | In-Line | In-Line |
| Shell Plating | - | Olive Drab Chromate over Cadmium | Olive Drab Chromate over Cadmium |