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| PartNumber | D38999/20FH53AB | D38999/20FH53AA | D38999/20FH53AD |
| Description | Circular MIL Spec Connector Tri-Start Connectors Wall Mount | Circular MIL Spec Connector Tri-Start Connectors Wall Mount | Circular MIL Spec Connector DTS 53C 53#20 PIN R ECP |
| Manufacturer | Amphenol | Amphenol | - |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector | - |
| RoHS | N | N | - |
| Number of Positions | 53 Position | 53 Position | - |
| Insert Arrangement | 23 - 53 | 23 - 53 | - |
| Contact Gender | Without Pin Contacts | Without Pin Contacts | - |
| MIL Type | MIL-DTL-38999 III | MIL-DTL-38999 III | - |
| Product | Receptacles | Receptacles | - |
| Shell Size | 23 | 23 | - |
| 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 | - |
| Mounting Angle | Straight | Straight | - |
| Brand | Amphenol Aerospace | Amphenol Aerospace | - |
| Shell Plating | Nickel | Nickel | - |
| 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 | 38999 | 38999 | - |
| Mating Style | - | Self Locking | - |