MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts, sealed for harsh environments. Operating from -65°C to 200°C, these connectors come in various styles including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they feature M39029 rear release crimp contacts in different sizes. Constructed with aluminum shells and plating options such as cadmium and nickel, they ensure reliable performance. RoHS compliant finishes guarantee environmental standards. Ideal for military and industrial applications, these connectors provide EMI/RFI shielding and 500 mating cycles, making them a durable choice for demanding environments.