The MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. Available in various shell sizes and insert arrangements, they offer versatility in applications. These connectors come in high strength aluminum shells with options for plating including cadmium and nickel. M39029 rear release crimp contacts ensure secure connections, with RoHS certified finishes available. Suitable for military and industrial use, they provide reliable performance with gold-plated contacts and bayonet coupling. The wall mounting flange design offers easy installation, making them ideal for demanding environments.