| PartNumber | MS3101A20-15P-RES | MS3101A20-15S-RES | MS3101A20-15S |
| Description | Circular MIL Spec Connector ER 7C 7#12 PIN RECP | Circular MIL Spec Connector ER 7C 7#12 SKT REC | Circular MIL Spec Connector 7P MS Series MIL-C-5015 |
| 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 |
| Unit Weight | 1.834246 oz | 2 oz | 2.539725 oz |
| Number of Positions | - | 7 Position | 7 Position |
| Insert Arrangement | - | 20-15 | 20-15 |
| Contact Gender | - | Socket (Female) | Socket (Female) |
| MIL Type | - | MIL-DTL-5015 | MIL-DTL-5015 |
| Product | - | Receptacles | Receptacles |
| Shell Size | - | 20 | 20 |
| Shell Style | - | In-Line | In-Line |
| Series | - | MS 5015 | MS 5015 |
| Shell Plating | - | Olive Drab Chromate over Cadmium | Olive Drab Chromate over Cadmium |
| Tradename | - | 5015 | 5015 |
| Mounting Style | - | - | Cable |
| Termination Style | - | - | Solder |
| Contact Plating | - | - | Silver |
| Mounting Angle | - | - | Straight |
| Mating Style | - | - | Threaded |
| Shell Material | - | - | Aluminum Alloy |
| Part # Aliases | - | - | 61-168120-15S MS31O1A20-15S U61-168120-15S |