The MIL-DTL-38999 Series I connectors, designed for harsh environments, offer reliable performance with up to 128 contacts in an insert. These environmentally sealed connectors feature a wide operating temperature range from -65°C to 200°C, making them suitable for various applications. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. With options for front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors provide versatility. Constructed with high-strength aluminum shells and offered in various plating options, including RoHS-certified cadmium-free finishes, they ensure durability and compliance with industry standards. The MIL-DTL-38999 Series I connectors are ideal for demanding military and aerospace applications, where reliability is paramount.