MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65°C and 200°C, these connectors offer front and rear wall mount, jam nut, and box mount receptacles. Available in aluminum shells with various plating options, including RoHS certified finishes, they ensure reliable performance. Utilizing M39029 rear release crimp contacts, these connectors come in 9 shell sizes and 52 insert arrangements. With a straight, RFI grounding, or standard plug options, they meet military specification MIL-DTL-38999 II standards, making them ideal for demanding applications.