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| PartNumber | D38999/20JD18SB | D38999/20JD18SA | D38999/20JD18SA-LC |
| Description | Circular MIL Spec Connector CTV 18C 18#20 SKT RECP | Circular MIL Spec Connector 18P WL MNT SOC SZ 15 | Circular MIL Spec Connector 18P Size 20 Wall Mount Recept Socket |
| Manufacturer | Amphenol | Amphenol | - |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector | - |
| Number of Positions | 18 Position | 18 Position | - |
| Insert Arrangement | 15 - 18 | 15 - 18 | - |
| Contact Gender | Socket (Female) | Socket (Female) | - |
| MIL Type | MIL-DTL-38999 III | MIL-DTL-38999 III | - |
| Product | Receptacles | Receptacles | - |
| Shell Size | 15 | 15 | - |
| Shell Style | Wall Mount | Wall Mount | - |
| Mounting Style | Panel | Panel | - |
| Termination Style | Crimp | Crimp | - |
| Current Rating | 7.5 A | 7.5 A | - |
| Series | D38999 III | D38999 III | - |
| Brand | Amphenol Aerospace | Amphenol Aerospace | - |
| Shell Plating | Olive Drab Cadmium | Olive Drab Cadmium | - |
| Product Type | Circular MIL Spec Connector | Circular MIL Spec Connector | - |
| Shell Material | Composite | Composite | - |
| Factory Pack Quantity | 1 | 1 | - |
| Subcategory | Circular Connectors | Circular Connectors | - |
| Tradename | 38999 | 38999 | - |
| Part # Aliases | 88-578864-18J | 88-578864-18H | - |
| RoHS | - | N | - |
| Contact Plating | - | Gold | - |
| Contact Material | - | Copper Alloy | - |
| Mounting Angle | - | Straight | - |
| Mating Style | - | Self Locking | - |
| Qualification | - | EREL | - |