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| PartNumber | M85049/1821N05 | M85049/1821N05B | M85049/1821N05A |
| Description | Circular MIL Spec Backshells Straight Backshell | Circular MIL Spec Backshells EMI/RFI BKSHLL NI SH SZ 21 CLMP SZ 05 | Circular MIL Spec Backshells Straight Backshell |
| Manufacturer | Amphenol PCD | - | - |
| Product Category | Circular Connectors - Backshells and Cable Clamps | - | - |
| Color | Silver | - | - |
| Material | Aluminum Alloy | - | - |
| Series | Military, SAE AS85049 | - | - |
| Product | Environmental EMI/RFI Backshells | - | - |
| Type | Backshell, Cable Clamp | - | - |
| Part Aliases | A850491821N05 | - | - |
| Features | Clamp Screws | - | - |
| Ingress Protection | Environment Resistant | - | - |
| Shell Style | Straight | - | - |
| Shell Size | 21 | - | - |
| Shell Plating | Electroless Nickel | - | - |
| Shielding | Shielded | - | - |
| Shell Size Insert | - | - | |
| Cable Opening | 0.500" ~ 0.625" (12.70mm ~ 15.88mm) | - | - |
| Diameter Outside | 1.550" (39.37mm) | - | - |
| Thread Size | M31x1 | - | - |
| Cable Exit | 180° | - | - |
| Plating | Electroless Nickel | - | - |
| Mounting Angle | Straight | - | - |
| MIL Type | MIL-DTL-38999 III IV | - | - |
| Mating Style | Rotatable Coupling | - | - |
| Shell Material | Aluminum Alloy | - | - |