MIL-DTL-38999 Series II connectors are robust and reliable solutions for demanding environments, featuring up to 128 contacts in a sealed insert. With a wide operating temperature range of -65 °C to 200 °C, they offer versatility in various applications. Available in different mounting styles such as front and rear wall mount, jam nut, and box mount, these connectors ensure secure installations. The aluminum shells come with multiple plating options, including cadmium-free finishes for RoHS compliance. Using M39029 crimp contacts, they guarantee efficient signal transmission with gold plating for enhanced conductivity. With a service rating of I and a mating type of bayonet, these connectors are suitable for military and industrial use, providing 500 mating cycles for long-term reliability in harsh conditions.