MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, ideal for harsh environments. With an operating temperature range of -65 °C to 200 °C, these connectors come in various configurations including front wall mount, rear wall mount, and jam nut receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for reliable connections. Made of aluminum, they offer plating options like electroless nickel, ensuring durability. RoHS compliant finishes are also available. Suitable for military and industrial applications, these connectors are designed for high performance and longevity.