| Base Product Number | 8D521K |
| Category | Connectors, Interconnects |
| Connector Type | Plug Housing |
| Contact Shape | Circular |
| Contact Size | 12 (4), 22D (55) |
| Contact Type | Crimp |
| Fastening Type | Threaded |
| Features | Coupling Nut |
| Housing Color | Silver |
| Includes, Material Flammability Rating, Mounting Feature, Shell Size, MIL | - |
| Ingress Protection | IP67 - Dust Tight, Waterproof |
| Insert Material | Thermoplastic |
| Mfr | Souriau-Sunbank by Eaton |
| Mounting Type | Free Hanging (In-Line) |
| Note | Contacts Not Included |
| Number of Positions | 59 |
| Operating Temperature | -65?C ~ 200?C |
| Orientation | D |
| Package | Bulk |
| Product Status | Active |
| Series | MIL-DTL-38999 Series III, 8D |
| Shell Finish | Stainless Steel |
| Shell Size - Insert | 21-59 |
| Type | For Male Pins |