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| PartNumber | D38999/20JJ35BA | D38999/20JJ35BC | D38999/20JJ35BB |
| Description | Circular MIL Spec Connector 128P WALL MOUNT RECP SOCKET CRIMP SZ 25 | Circular MIL Spec Connector 128P Size 20 Wall Mount Recept Socket | |
| Manufacturer | Amphenol | Amphenol | - |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector | - |
| RoHS | N | N | - |
| Number of Positions | 128 Position | 128 Position | - |
| Insert Arrangement | 25 - 35 | 25 - 35 | - |
| Contact Gender | Without Socket Contacts | Without Socket Contacts | - |
| MIL Type | MIL-DTL-38999 III | MIL-DTL-38999 III | - |
| Product | Receptacles | Receptacles | - |
| Shell Size | 25 | 25 | - |
| Shell Style | Wall Mount | Wall Mount | - |
| Mounting Style | Panel | Panel | - |
| Termination Style | Crimp | Crimp | - |
| Current Rating | 5 A | 5 A | - |
| Contact Plating | Gold | - | - |
| Contact Material | Copper Alloy | - | - |
| Series | D38999 III | D38999 III | - |
| Mounting Angle | Straight | - | - |
| Brand | Amphenol Aerospace | Amphenol Aerospace | - |
| Shell Plating | Olive Drab Cadmium | Olive Drab Cadmium | - |
| Mating Style | Self Locking | - | - |
| Product Type | Circular MIL Spec Connector | Circular MIL Spec Connector | - |
| Qualification | EREL | - | - |
| Shell Material | Composite | Composite | - |
| Factory Pack Quantity | 1 | 1 | - |
| Subcategory | Circular Connectors | Circular Connectors | - |
| Tradename | 38999 | 38999 | - |
| Part # Aliases | 88-579779-35H | 88-579779-35L | - |
| Unit Weight | 1.594383 oz | - | - |