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| PartNumber | MS27472T22F21P | MS27472T22F21PB | MS27472T22F21PA |
| Description | Circular MIL Spec Connector 21P Sz 22 Wall Mount Recpt Pin | Circular MIL Spec Connector 21P Sz 22 Wall Mount Recpt Pin | Conn Subminiature Cylindrical PIN 21 POS Crimp ST Wall Mount 21 Terminal 1 Port |
| Manufacturer | Amphenol | Amphenol | - |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector | - |
| Number of Positions | 21 Position | 21 Position | - |
| Insert Arrangement | 22-21 | 22-21 | - |
| Contact Gender | Pin (Male) | Pin (Male) | - |
| MIL Type | MIL-DTL-38999 II | MIL-DTL-38999 II | - |
| Product | Receptacles | Receptacles | - |
| Shell Size | 22 | 22 | - |
| Shell Style | Wall Mount | Wall Mount | - |
| Series | MS 38999 II | MS 38999 II | - |
| Brand | Amphenol Aerospace | Amphenol Aerospace | - |
| Shell Plating | Passivated Steel | Passivated Steel | - |
| Product Type | Circular MIL Spec Connector | Circular MIL Spec Connector | - |
| Factory Pack Quantity | 1 | 1 | - |
| Subcategory | Circular Connectors | Circular Connectors | - |
| Tradename | 38999 | 38999 | - |
| Part # Aliases | 91-542108-21P | 91-542108-21R | - |