| PartNumber | M85049/38S21N | M85049/38S21W | M85049/38S23N |
| Description | Circular MIL Spec Backshells Straight Backshell Strain Relief SZ 21 | Circular MIL Spec Strain Reliefs & Adapters Backshell | Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST SL NIC SZ 23 |
| Manufacturer | Glenair | Souriau | - |
| Product Category | Circular MIL Spec Backshells | Circular MIL Spec Strain Reliefs & Adapters | - |
| RoHS | Y | E | - |
| MIL Type | MIL-DTL-38999 III, IV | MIL-DTL-38999 III, IV | - |
| Shell Size | 21 | 21 | - |
| Shell Plating | Nickel, Electroless | Cadmium over Electroless Nickel | - |
| Shell Material | Aluminum | Aluminum Alloy | - |
| Series | AS85049 | M85049 | - |
| Brand | Glenair | Souriau | - |
| Mating Style | Self Locking | Self Locking | - |
| Product Type | Circular MIL Spec Backshells | Circular MIL Spec Strain Reliefs & Adapters | - |
| Qualification | EREL | - | - |
| Factory Pack Quantity | 1 | 5 | - |
| Subcategory | Circular Connectors | Circular Connectors | - |
| Unit Weight | 1.128767 oz | 0.846575 oz | - |
| Product | - | Strain Reliefs | - |
| Shell Style | - | Straight | - |
| Type | - | Strain Relief Clamps | - |