MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert with an operating temperature range of -65°C to 200°C. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with plating options including cadmium-free finishes. Offering front and rear wall mount receptacles, as well as jam nut receptacles and RFI grounding plugs, they use M39029 rear release crimp contacts for secure connections. Designed for harsh environments, these connectors, with gold-plated contacts, ensure reliable performance in demanding applications with a mating life of 500 cycles. Suitable for military and industrial use, they provide excellent conductivity and ingress protection. (Word count: 108)