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 with front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Constructed with high-strength aluminum shells and RoHS-certified plating options, including cadmium-free finishes, these connectors ensure reliable performance. Utilizing M39029 rear release crimp contacts, they come in a straight plug configuration with 26 gold-plated contacts. Meeting military specification MIL-DTL-38999 I, they guarantee durability with a service rating of I and a mating life of 500 cycles, making them ideal for applications requiring environment-resistant connectivity.