| PartNumber | BLL1SSK12039XN | BLL1SSK12029XN | BLL1SSK12029XW |
| Description | Circular MIL Spec Backshells BAND LOCK EMI/RFI ST SS12 ES03 WO-BND NI | Circular MIL Spec Backshells BAND LOCK EMI/RFI ST SS12 ES02 WO-BND NI | Circular MIL Spec Backshells BAND LOCK EMI/RFI ST SS12 ES02 WO-BND CAD |
| Manufacturer | Amphenol | Amphenol | Amphenol |
| Product Category | Circular MIL Spec Backshells | Circular MIL Spec Backshells | Circular MIL Spec Backshells |
| RoHS | Y | Y | N |
| MIL Type | MIL-DTL-38999 I, II | MIL-DTL-38999 I, II | MIL-DTL-38999 I, II |
| Product | Band Lock Adapters | Band Lock Adapters | Band Lock Adapters |
| Shell Style | Banding | Banding | Banding |
| Shell Size | 12 | 12 | 12 |
| Shell Plating | Electroless Nickel | Electroless Nickel | Cadmium, Olive Drab |
| Shell Material | Aluminum Alloy | Aluminum Alloy | Aluminum Alloy |
| Series | AlumaLight | AlumaLight | AlumaLight |
| Gender | Plugs | Plugs | Plugs |
| Mounting Angle | Straight | Straight | Straight |
| Brand | Amphenol Pcd | Amphenol Pcd | Amphenol Pcd |
| Mating Style | Self Locking | Self Locking | Self Locking |
| Product Type | Circular MIL Spec Backshells | Circular MIL Spec Backshells | Circular MIL Spec Backshells |
| Subcategory | Circular Connectors | Circular Connectors | Circular Connectors |
| Tradename | AlumaLight | AlumaLight | AlumaLight |