| PartNumber | 530721-4 | 530721-3 | 530721-1 |
| Description | Headers & Wire Housings MINI BOX EXTRNAL KEY | Headers & Wire Housings MINI-BOX EXT KEY KIT | Rectangular MIL Spec Connectors MINI BOX EXT KEY |
| Manufacturer | TE Connectivity | TE Connectivity | TE Connectivity Aerospace, Defense and Marine |
| Product Category | Headers & Wire Housings | Headers & Wire Housings | Rectangular - Board to Board Connectors - Accessories |
| RoHS | E | Y | - |
| Product | Accessories | Accessories | Accessories |
| Type | - | - | - |
| Number of Positions | - | - | - |
| Pitch | - | - | - |
| Number of Rows | - | - | - |
| Mounting Style | - | - | - |
| Termination Style | - | - | - |
| Mounting Angle | Straight | Straight | Straight |
| Contact Gender | - | - | - |
| Contact Plating | - | - | - |
| Mating Post Length | - | - | - |
| Termination Post Length | - | - | - |
| Series | Box Connector 1000 | Box Connector 1000 | Military, MIL-DTL-55302, Mini-Box |
| Accessory Type | External Key | Keying Hardware | External Key |
| Contact Type | - | - | - |
| Housing Material | Stainless Steel | Stainless Steel | Stainless Steel |
| Brand | TE Connectivity / AMP | TE Connectivity / AMP | - |
| Contact Material | - | - | - |
| Row Spacing | - | - | - |
| Housing Gender | - | - | - |
| Product Type | Headers & Wire Housings | Headers & Wire Housings | - |
| Factory Pack Quantity | 1 | 1 | - |
| Subcategory | Headers & Wire Housings | Headers & Wire Housings | - |
| Part # Aliases | 530721-4 | 530721-3 | - |
| Part Aliases | - | - | M55302 M55302/31-06 |
| Qualification | - | - | Commercial |
| For Use With Related Products | - | - | Mini-Box Series |