| PartNumber | 1-521253-3 | 1-521253-2 | 1-521253-1 |
| Description | Terminals .250 FASTON/POSI LOK MKII HSG | Terminals 250 FAST OR POSI-LOC MKII HSG | Terminals 250 FAST OR POSI-LOC MKII HSG |
| Manufacturer | TE Connectivity | TE Connectivity | - |
| Product Category | Terminals | Terminals | - |
| RoHS | Y | Y | - |
| Product | Accessories | Accessories | - |
| Type | Terminal Housing | Terminal Housing | - |
| Brand | TE Connectivity / AMP | TE Connectivity / AMP | - |
| Product Type | Terminals | Terminals | - |
| Factory Pack Quantity | 1 | 1 | - |
| Subcategory | Terminals | Terminals | - |
| Part # Aliases | 1-521253-3 | 1-521253-2 | - |