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| PartNumber | MS3456L12S-4A | MS3456L12S-4P | MS3456L12S-4B |
| Description | Circular MIL Spec Connector PLUG | Circular MIL Spec Connector PLUG | Circular MIL Spec Connector PLUG |
| Manufacturer | Amphenol | Amphenol | Amphenol |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular MIL Spec Connector |
| Number of Positions | 1 Position | 1 Position | 1 Position |
| Insert Arrangement | 12S-4 | 12S-4 | 12S-4 |
| Contact Gender | Without Pin Contacts | Pin (Male) | Without Socket Contacts |
| MIL Type | MIL-DTL-5015 | MIL-DTL-5015 | MIL-DTL-5015 |
| Product | Plugs | Plugs | Plugs |
| Shell Size | 12 | 12 | 12 |
| Shell Style | In-Line | In-Line | In-Line |
| Series | Matrix | Matrix | Matrix |
| Packaging | Bulk | Bulk | Bulk |
| Brand | Amphenol Aerospace | Amphenol Aerospace | Amphenol Aerospace |
| Shell Plating | Electroless Nickel | Electroless Nickel | Electroless Nickel |
| Mating Style | Threaded | Threaded | Threaded |
| Product Type | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular MIL Spec Connector |
| Shell Material | Aluminum | Aluminum | Aluminum |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Circular Connectors | Circular Connectors | Circular Connectors |
| Part # Aliases | 3456L12S4A | 3456L12S4P | 3456L12S4B |