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| PartNumber | D38999/24WG39SB | D38999/24WG39SA-LC | D38999/24WG39SA |
| Description | Circular MIL Spec Connector 39P Size 21 Jam Nut Socket Receptacle | Circular MIL Spec Connector DTS 39C 37#20 | Circular MIL Spec Connector 39P SZ 21 RCPT PNL MNT SKT |
| Manufacturer | Amphenol | TE Connectivity | Amphenol |
| Product Category | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular MIL Spec Connector |
| RoHS | N | N | N |
| Number of Positions | 39 Position | 39 Position | 39 Position |
| Insert Arrangement | 21 - 39 | 21-39 | 21 - 39 |
| Contact Gender | Socket (Female) | Without Socket Contacts | Socket (Female) |
| MIL Type | MIL-DTL-38999 III | MIL-DTL-38999 III | MIL-DTL-38999 III |
| Product | Receptacles | Receptacles | Receptacles |
| Shell Size | 21 | 21 | 21 |
| Shell Style | Jam Nut | Jam Nut | Jam Nut |
| Mounting Style | Panel | Panel | Panel |
| Termination Style | Crimp | - | Crimp |
| Current Rating | 7.5 A, 13 A | - | 7.5 A, 13 A |
| Contact Plating | Gold | - | Gold |
| Contact Material | Copper Alloy | - | Copper Alloy |
| Series | D38999 III | D38999 Series III | D38999 III |
| Packaging | Bulk | - | - |
| Mounting Angle | Straight | Straight | Straight |
| Voltage Rating | 850 V | - | - |
| Brand | Amphenol Aerospace | TE Connectivity / DEUTSCH | Amphenol Aerospace |
| Shell Plating | Olive Drab Cadmium | Olive Drab Chromate over Cadmium | Olive Drab Cadmium |
| Mating Style | Self Locking | Self Locking | Self Locking |
| Product Type | Circular MIL Spec Connector | Circular MIL Spec Connector | Circular MIL Spec Connector |
| Shell Material | Aluminum | Aluminum | Aluminum |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Circular Connectors | Circular Connectors | Circular Connectors |
| Tradename | 38999 | D38999 | 38999 |
| Wire Gauge | 20, 16 | - | - |
| Part # Aliases | 88-552067-39J | - | 88-552067-39H |
| Unit Weight | - | 0.035274 oz | - |
| Qualification | - | - | EREL |