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| PartNumber | M39029/75-422 | M39029/75-416 | M39029/75-417 |
| Description | Circular MIL Spec Contacts SKT Contact SZ 12 | Circular MIL Spec Contacts CRIMP SOCKET CONTACT | Circular MIL Spec Contacts SKT 12 GA COAX |
| Manufacturer | Amphenol | Amphenol Aerospace Operations | Amphenol Aerospace Operations |
| Product Category | Circular MIL Spec Contacts | Circular Connectors - Contacts | Circular Connectors - Contacts |
| Series | MS | Military, SAE AS39029 | Military, SAE AS39029 |
| Product | Contacts | - | - |
| Brand | Amphenol Aerospace | - | - |
| Product Type | Circular MIL Spec Contacts | - | - |
| Factory Pack Quantity | 6 | - | - |
| Subcategory | Circular Connectors | - | - |
| Type | - | Coaxial | Coaxial |
| Packaging | - | Bulk | Bulk |
| Part Aliases | - | 21-33123-546 | - |
| Termination Style | - | Crimp | - |
| Features | - | - | - |
| Contact Material | - | Copper Alloy | Copper Alloy |
| Contact Finish | - | Gold | Gold |
| Contact Termination | - | Crimp | Crimp |
| Wire Gauge | - | 14 AWG - 12 AWG | 14 AWG - 12 AWG |
| Contact Finish Thickness | - | 50μin (1.27μm) | 50μin (1.27μm) |
| Contact Type | - | Coax, Pin Center, Assembly | Coax, Pin Center, Assembly |
| Contact Size | - | 12 | 12 |
| Wire Gauge or Range AWG | - | - | - |
| Wire Gauge or Range mm2 | - | - | - |
| Wire Gauge or Range Coaxial | - | RG-174, 179, 316 | RG-180B, 195A |
| Termination Finish | - | - | - |
| Contact Gender | - | Socket (Female) | Socket (Female) |
| MIL Type | - | MIL-DTL-39029 | MIL-DTL-39029 |
| Contact Plating | - | - | Nickel |