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| PartNumber | D38999/26JJ4JA-LC | D38999/26JJ4JA | D38999/26JJ4JB |
| Description | Circular MIL Spec Connector 56P Size 26 Straight Plug Socket | Circular MIL Spec Connector 56P Size 26 Straight Plug Socket | Circular MIL Spec Connector |
| Manufacturer | Amphenol | Amphenol | TE Connectivity |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular MIL Spec Connector |
| RoHS | N | N | - |
| Contact Gender | Without Socket Contacts | Socket (Female) | Socket (Female) |
| MIL Type | MIL-DTL-38999 III | MIL-DTL-38999 III | MIL-DTL-38999 III |
| Termination Style | - | Crimp | Crimp |
| Contact Plating | - | Gold | Gold |
| Contact Material | - | Copper Alloy | Copper Alloy |
| Series | D38999 III | D38999 III | - |
| Brand | Amphenol Aerospace | Amphenol Aerospace | TE Connectivity / DEUTSCH |
| Product Type | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular MIL Spec Connector |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Circular Connectors | Circular Connectors | Circular Connectors |
| Tradename | 38999 | 38999 | - |
| Part # Aliases | 88-577859-04H D38999/26JJ04JA-LC | 88-577769-04H D38999/26JJ04JA | - |
| Number of Positions | - | 56 Position | 56 Position |
| Insert Arrangement | - | 25-4 | 25-4 |
| Product | - | Plugs | Plugs |
| Shell Size | - | 25 | 25 |
| Shell Style | - | In-Line | In-Line |
| Mounting Style | - | Wire | Wire |
| Mounting Angle | - | Straight | Straight |
| Shell Plating | - | Olive Drab Chromate over Cadmium | Olive Drab Chromate over Cadmium |
| Mating Style | - | Self Locking | Self Locking |
| Shell Material | - | Aluminum | Aluminum |
| Unit Weight | - | - | 0.035274 oz |