The MIL-DTL-38999 Series II connectors boast high performance in harsh environments, accommodating up to 128 contacts within their inserts. Operating flawlessly in temperatures ranging from -65 °C to 200 °C, these connectors offer versatility with various mounting options such as front and rear wall mounts, jam nuts, and box mounts. Featuring thin walls and restricted lengths, they ensure efficient space utilization. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Crafted from aluminum with plating options including gold, electroless nickel, and anodized finishes, they guarantee durability and reliability. RoHS compliant options further enhance their environmental sustainability. Designed for military specifications, these connectors, with their bayonet coupling and removable crimp contacts, are ideal for demanding applications where performance is paramount.