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