MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for rugged environments with an operating temperature range of -65 °C to 200 °C. The connector family includes front and rear wall mount as well as jam nut receptacles, all offering RFI grounding options. With 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in various sizes. Constructed with high strength aluminum shells, these connectors come with plating options such as cadmium finishes, electroless nickel, and black anodized aluminum. RoHS certified cadmium-free finishes are also available. The MS27466 connectors, known for their reliability, are ideal for military and industrial applications requiring high performance in harsh conditions.