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| PartNumber | MS3101E28-21S | MS3101E28-21PX | MS3101E28-21P |
| Description | Circular MIL Spec Connector 37P #16 SKT CONTACTS | Circular MIL Spec Connector ER 37C 37#16 PIN RECP | Circular MIL Spec Connector 37P #16 PIN CONTACTS |
| Manufacturer | Amphenol | Amphenol Industrial Operations | - |
| Product Category | Circular MIL Spec Connector | Circular Connectors | - |
| RoHS | N | - | - |
| Number of Positions | 37 Position | - | |
| Insert Arrangement | 28-21 | - | - |
| Contact Gender | Socket (Female) | - | - |
| MIL Type | MIL-DTL-5015 | - | - |
| Product | Receptacles | - | - |
| Shell Size | 28 | - | - |
| Shell Style | In-Line | - | - |
| Series | MS 5015 | * | - |
| Brand | Amphenol Industrial | - | - |
| Shell Plating | Olive Drab Chromate over Cadmium | - | - |
| Product Type | Circular MIL Spec Connector | - | - |
| Factory Pack Quantity | 1 | - | - |
| Subcategory | Circular Connectors | - | - |
| Tradename | 5015 | - | - |
| Part # Aliases | MS31O1E28-21S U10-169178-21S | - | - |
| Unit Weight | 6.590446 oz | - | - |
| Packaging | - | Bulk | - |
| Termination | - | Solder Cup | - |
| Mounting Type | - | Free Hanging (In-Line) | - |
| Features | - | Strain Relief | - |
| Ingress Protection | - | Environment Resistant | - |
| Connector Type | - | Receptacle, Male Pins | - |
| Orientation | - | X | - |
| Contact Finish | - | Silver | - |
| Shell Size Insert | - | 28-21 | - |
| Fastening Type | - | Threaded | - |
| Shell Size MIL | - | - | - |
| Shell Material Finish | - | Aluminum Alloy, Olive Drab Cadmium Plated | - |