MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high strength aluminum shells come in multiple plating options, including cadmium-free finishes, meeting RoHS certification. With front and rear wall mount options, as well as jam nut receptacles, these connectors are versatile for different applications. Suitable for military and industrial use, they ensure reliable conductivity and ingress protection, making them ideal for demanding environments.