MIL-DTL-38999 Series II connectors boast up to 128 contacts in a sealed insert, designed for extreme environments with an operating range from -65°C to 200°C. Featuring various mounting options like front and rear wall mounts, jam nuts, and box mounts, they offer versatility in installation. Available in 9 shell sizes with 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable connectivity. Crafted from aluminum, they come in plating options including cadmium-free finishes for RoHS compliance. Ideal for military and industrial applications, these connectors ensure secure and durable electrical connections in harsh conditions.