| Base Product Number | D38999/20LH |
| Category | Connectors, Interconnects |
| Connector Type | Receptacle Housing |
| Contact Shape | Circular |
| Contact Size | 20 |
| Contact Type | Crimp |
| Fastening Type | Threaded |
| Features, Includes, Insert Material, Material Flammability Rating | - |
| Housing Color | Silver |
| Ingress Protection | Environment Resistant |
| Mfr | Amphenol Aerospace Operations |
| Mounting Feature | Flange |
| Mounting Type | Panel Mount |
| Note | Contacts Not Included |
| Number of Positions | 55 |
| Operating Temperature | -65?C ~ 200?C |
| Orientation | N (Normal) |
| Package | Bulk |
| Product Status | Active |
| Series | Military, MIL-DTL-38999 Series III, Tri-Start? TV |
| Shell Finish | Nickel |
| Shell Material | Stainless Steel |
| Shell Size - Insert | 23-55 |
| Shell Size, MIL | H |
| Shielding | Shielded |
| Type | For Female Sockets |