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, they 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, these connectors utilize M39029 rear release crimp contacts, ensuring reliable connections. Constructed with aluminum shells and offering multiple plating options, they guarantee durability and versatility. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications that require secure and efficient data transmission.