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| PartNumber | D38999/20WJ4PA | D38999/20WJ4PB | D38999/20WJ4PA-LC |
| Description | Circular MIL Spec Connector 56C 48#20, 8#16 | Circular MIL Spec Connector 56P ST WL MNT SZ 25 | Circular MIL Spec Connector 56P Sz 25 Wall Mount Pin Receptacle |
| Manufacturer | TE Connectivity | Amphenol | TE Connectivity Deutsch Connectors |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular Connectors - Housings |
| RoHS | N | N | - |
| Number of Positions | 56 Position | 56 Position | 56 |
| Insert Arrangement | 25 - 4 | 25 - 4 | - |
| Contact Gender | Pin (Male) | Pin (Male) | - |
| 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 | 7.5 A, 13 A | 7.5 A, 13 A | - |
| Series | D38999 Series III | D38999 III | Military, MIL-DTL-38999 Series III, DTS |
| Brand | TE Connectivity / DEUTSCH | Amphenol Aerospace | - |
| Shell Plating | Olive Drab Cadmium | Olive Drab Cadmium | - |
| Product Type | Circular MIL Spec Connector | Circular MIL Spec Connector | - |
| Shell Material | Aluminum | Aluminum | - |
| Factory Pack Quantity | 1 | 1 | - |
| Subcategory | Circular Connectors | Circular Connectors | - |
| Tradename | D38999 | 38999 | - |
| Unit Weight | 2.512000 oz | - | - |
| Contact Plating | - | Gold | - |
| Contact Material | - | Copper Alloy | - |
| Mounting Angle | - | Straight | - |
| Mating Style | - | Self Locking | - |
| Qualification | - | EREL | - |
| Part # Aliases | - | 88-552009-04I D38999/20WJ04PB | - |
| Packaging | - | - | Bulk |
| Mounting Type | - | - | Panel Mount, Flange |
| Features | - | - | Shielded |
| Ingress Protection | - | - | Environment Resistant |
| Connector Type | - | - | Receptacle for Male Contacts |
| Orientation | - | - | A |
| Contact Type | - | - | Crimp |
| Shell Size Insert | - | - | 25-4 |
| Fastening Type | - | - | Threaded |
| Contact Size | - | - | |
| Shell Size MIL | - | - | J |
| Shell Material Finish | - | - | Aluminum, Olive Drab Cadmium Plated |