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 front wall mount, rear wall mount, and jam nut receptacles, this connector family offers versatility with 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, it ensures reliable connections in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells and various plating options including cadmium-free finishes, these connectors meet stringent military specifications for performance and durability. Ideal for applications requiring conductivity and environmental resistance, they are RoHS compliant and suitable for demanding military and industrial settings.