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| Part Number | AHDM04-18-21PN |
| Description | CONN RCPT HSNG MALE 21POS PNL MT |
| Manufacturer | Amphenol Sine Systems Corp |
| Series | DuraMate™ AHDM |
| Part Status | Active |
| Connector Type | Receptacle Housing |
| Type | For Male Pins |
| Number of Positions | 21 |
| Shell Size - Insert | 18-21 |
| Shell Size, MIL | - |
| Contact Type | Crimp |
| Contact Size | 20 |
| Mounting Type | Panel Mount |
| Mounting Feature | Bulkhead - Front Side Nut |
| Fastening Type | Bayonet Lock |
| Orientation | Keyed |
| Shell Material | Zinc Alloy |
| Shell Finish | Nickel |
| Housing Color | Silver |
| Ingress Protection | IP67/69K - Dust Tight, Water Resistant, Waterproof |
| Material Flammability Rating | - |
| Features | - |
| Shielding | Unshielded |