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See Product Specifications
| Part Number: | MS3451L18-4AY | 
| Category: | Connectors, Interconnects | 
| Subcategory: | Circular Connectors - Housings | 
| Manufacturer: | Amphenol Aerospace Operations | 
| Packaging: | Bulk | 
| Product Status: | Active | 
| Connector Type: | Receptacle Housing | 
| Type: | For Male Pins | 
| Number of Positions: | 4 | 
| Shell Size - Insert: | 18-4 | 
| Shell Size, MIL: | - | 
| Contact Type: | Crimp | 
| Contact Size: | 16 | 
| Mounting Type: | Free Hanging (In-Line) | 
| Mounting Feature: | - | 
| Fastening Type: | Threaded | 
| Orientation: | Y | 
| Primary Material: | - | 
| Shell Material: | Aluminum | 
| Shell Finish: | Electroless Nickel | 
| Housing Color: | Silver | 
| Ingress Protection: | Fluid Resistant | 
| Material Flammability Rating: | - | 
| Features: | - | 
| Shielding: | Unshielded |