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| PartNumber | MS27474T18F53P | MS27474T18F53S-LC | MS27474T18F53S |
| Description | Circular MIL Spec Connector 53P Size 18 Rear Mount Receptacle | Circular MIL Spec Connector JT 53C 53#22 SKT RECP | Circular MIL Spec Connector 53P Size 18 Rear Mount Receptacle |
| Manufacturer | Amphenol | Amphenol | Amphenol |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular MIL Spec Connector |
| RoHS | N | Y | N |
| Number of Positions | 53 Position | - | 53 Position |
| Insert Arrangement | 18-53 | - | 18-53 |
| Contact Gender | Pin (Male) | - | Socket (Female) |
| MIL Type | MIL-DTL-38999 II | - | MIL-DTL-38999 II |
| Product | Receptacles | - | Receptacles |
| Shell Size | 18 | - | 18 |
| Shell Style | Jam Nut | - | Jam Nut |
| Mounting Style | Panel | - | Panel |
| Termination Style | Crimp | - | Crimp |
| Contact Plating | Gold | - | Gold |
| Series | MS 38999 II | D38999 III | MS 38999 II |
| Mounting Angle | Straight | - | Straight |
| Brand | Amphenol Aerospace | Amphenol Aerospace | Amphenol Aerospace |
| Shell Plating | Passivated Steel | - | Passivated Steel |
| Mating Style | Bayonet | - | Bayonet |
| Product Type | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular MIL Spec Connector |
| Shell Material | Aluminum | - | Aluminum |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Circular Connectors | Circular Connectors | Circular Connectors |
| Tradename | 38999 | 38999 | 38999 |
| Part # Aliases | 91-542151-53P | - | - |
| Qualification | - | - | EREL |