MIL-DTL-38999 Series II connectors offer robust performance in harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an impressive operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various mounting options, including front wall, rear wall, jam nut, and box mount receptacles, they ensure versatile installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in multiple sizes. Constructed with durable aluminum shells, they boast a range of plating options, including cadmium-free finishes for RoHS compliance. With gold-plated contacts and a bayonet coupling design, these connectors guarantee reliable conductivity and mating integrity. Suitable for military, aerospace, and industrial use, they meet stringent MIL-DTL-38999 II specifications, offering high performance and durability in critical applications.