MIL-DTL-38999 Series I connectors offer high performance with up to 128 contacts in an insert, featuring front wall mount, rear wall mount, and jam nut receptacles. Designed for harsh environments, these connectors have a wide operating temperature range from -65 °C to 200 °C. Crafted with durable aluminum shells, they come in various plating options including gold for optimal conductivity. RoHS certified finishes are available, making them environmentally friendly. With M39029 rear release crimp contacts, they ensure secure and reliable connections. Suitable for military and aerospace applications, these connectors provide 500 mating cycles and are resistant to environmental factors.