The MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature various mounting options including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. With a wide operating temperature range of -65 °C to 200 °C, these connectors are suitable for demanding applications. Constructed with aluminum shells and offered in various plating options, including RoHS compliant finishes, they ensure reliable performance in diverse settings. Designed for military specifications, these connectors are ideal for aerospace, defense, and industrial applications requiring rugged and reliable connectivity.