MIL-DTL-38999 Series II connectors feature up to 128 contacts housed within an insert, ensuring robust connectivity in harsh environments. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating different contact configurations. Utilizing M39029 rear release crimp contacts, they guarantee secure connections. Crafted from durable aluminum, these connectors are offered in multiple plating options, including cadmium-free finishes, meeting RoHS compliance. Perfect for military and industrial use, they provide reliable performance with a service rating of I and a mating life of 500 cycles.