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| PartNumber | MS27473E18F53SC | MS27473E18F53S | MS27473E18F53S-LC |
| Description | Circular MIL Spec Connector Connectors, Interconnects - CONN PLUG 53POS STRAIGHT W/SCKT - Circular | Circular MIL Spec Connector Plug 5P3 SZ 18 SOC | Circular MIL Spec Connector 53P Sz 18 Straight Plug Socket |
| Manufacturer | Amphenol | Amphenol | - |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector | - |
| Number of Positions | 53 Position | 53 Position | - |
| Insert Arrangement | 18-53 | 18-53 | - |
| Contact Gender | Socket (Female) | Socket (Female) | - |
| MIL Type | MIL-DTL-38999 II | MIL-DTL-38999 II | - |
| Product | Plugs | Plugs | - |
| Shell Size | 18 | 18 | - |
| Shell Style | In-Line | In-Line | - |
| 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 | - |
| RoHS | - | N | - |
| Mounting Style | - | Cable | - |
| Termination Style | - | Crimp | - |
| Contact Plating | - | Gold | - |
| Mounting Angle | - | Straight | - |
| Mating Style | - | Bayonet | - |
| Qualification | - | EREL | - |
| Shell Material | - | Aluminum | - |