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| PartNumber | MS27508E22F55A | MS27508E22F55AA |
| Description | Circular MIL Spec Connector RECPT 5P SZ 22 | Circular MIL Spec Connector RECEPT |
| Manufacturer | Amphenol | Amphenol |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector |
| RoHS | N | - |
| Number of Positions | 55 Position | 55 Position |
| Insert Arrangement | 22-55 | 22-55 |
| Contact Gender | Without Pin Contacts | Without Pin Contacts |
| MIL Type | MIL-DTL-38999 II | MIL-DTL-38999 II |
| Product | Receptacles | Receptacles |
| Shell Size | 22 | 22 |
| Shell Style | Box Mount | Box Mount |
| Mounting Style | Panel | - |
| Termination Style | Crimp | - |
| Current Rating | 7.5 A | - |
| Contact Plating | Gold | - |
| Series | MS 38999 II | MS 38999 II |
| Voltage Rating | 850 V | - |
| Brand | Amphenol Aerospace | Amphenol Aerospace |
| Shell Plating | Passivated Steel | Passivated Steel |
| Mating Style | Bayonet | - |
| Product Type | Circular MIL Spec Connector | Circular MIL Spec Connector |
| Qualification | EREL | - |
| Shell Material | Aluminum | - |
| Factory Pack Quantity | 1 | - |
| Subcategory | Circular Connectors | Circular Connectors |
| Tradename | 38999 | 38999 |
| Part # Aliases | 91-553078-55P | 91-553078-55E |