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| PartNumber | MS3451W20-4S | MS3451W20-4SW | MS3451W20-4S-LC |
| Description | Circular MIL Spec Connector 5015 RR 4#12 SKT RECP | Conn MIL-C-5015 Circular SKT 4 POS Crimp ST Cable Mount 4 Terminal 1 Port - Bulk (Alt: MS3451W20-4SW) | Circular MIL Spec Connector 5015 RR 4#12 SKT RECP L/C |
| Manufacturer | Amphenol | - | - |
| Product Category | Circular MIL Spec Connector | - | - |
| Number of Positions | 4 Position | - | - |
| Insert Arrangement | 20-4 | - | - |
| Contact Gender | Socket (Female) | - | - |
| MIL Type | MIL-DTL-5015 | - | - |
| Product | Receptacles | - | - |
| Shell Size | 20 | - | - |
| Shell Style | In-Line | - | - |
| Series | Matrix 5015 | - | - |
| Brand | Amphenol Aerospace | - | - |
| Shell Plating | Olive Drab Cadmium | - | - |
| Mating Style | Threaded | - | - |
| Product Type | Circular MIL Spec Connector | - | - |
| Qualification | EREL | - | - |
| Shell Material | Aluminum | - | - |
| Factory Pack Quantity | 1 | - | - |
| Subcategory | Circular Connectors | - | - |
| Tradename | 5015 | - | - |
| Part # Aliases | 3451W204S | - | - |