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| PartNumber | D38999/20JC4SA-LC | D38999/20JC4SB | D38999/20JC4SA |
| Description | Circular MIL Spec Connector 4P Size 20 Wall Mount Recept Socket | Circular MIL Spec Connector 4P Size 20 Wall Mount Recept Socket | Circular MIL Spec Connector 4P WL mnt repct sz 13 |
| Manufacturer | Amphenol | Amphenol | Souriau Connection Technology |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular Connectors |
| 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 | - |
| Contact Material | - | Copper Alloy | - |
| Series | D38999 III | D38999 III | Military, MIL-DTL-38999 Series III |
| Brand | Amphenol Aerospace | Amphenol Aerospace | - |
| Product Type | Circular MIL Spec Connector | Circular MIL Spec Connector | - |
| Factory Pack Quantity | 1 | 1 | - |
| Subcategory | Circular Connectors | Circular Connectors | - |
| Tradename | 38999 | 38999 | - |
| Part # Aliases | 88-578893-04H D38999/20JC04SA-LC | 88-578863-04J D38999/20JC04SB | - |
| Number of Positions | - | 4 Position | 4 |
| Insert Arrangement | - | 13 - 4 | 13 - 4 |
| Product | - | Receptacles | Receptacles |
| Shell Size | - | 13 | 13 |
| Shell Style | - | Wall Mount | Wall Mount |
| Mounting Style | - | Panel | Panel |
| Current Rating | - | 13 A | 13 A |
| Mounting Angle | - | Straight | - |
| Shell Plating | - | Olive Drab Cadmium | Olive Drab Cadmium |
| Mating Style | - | Self Locking | - |
| Shell Material | - | Composite | Composite |
| Packaging | - | - | Bulk |
| Termination | - | - | Crimp |
| Mounting Type | - | - | Panel Mount, Flange |
| Features | - | - | - |
| Ingress Protection | - | - | Environment Resistant |
| Connector Type | - | - | Receptacle, Female Sockets |
| Orientation | - | - | A |
| Contact Finish | - | - | Gold |
| Shell Size Insert | - | - | 13-4 |
| Fastening Type | - | - | Threaded |
| Shell Size MIL | - | - | C |
| Shell Material Finish | - | - | Composite, Olive Drab Cadmium Plated |