The MIL-DTL-38999 Series II connectors, designed for harsh environments, feature up to 128 contacts in an insert. With -65°C to 200°C operating temperature range, these connectors are ideal for various applications. Available in nine shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts. Offering front and rear wall mount options, jam nut, and box mount receptacles, they ensure versatile installation. The aluminum shells come with various plating options, including cadmium-free finishes, meeting RoHS standards. With gold-plated contacts and a bayonet coupling design, they provide reliable conductivity and 500 mating cycles. Suitable for military and industrial use, these connectors guarantee durability and performance in demanding conditions.