MIL-DTL-38999 Series I connectors, part of the rugged 38999 connector family, are designed for harsh environments with up to 128 contacts for high-density applications. Featuring front and rear wall mount options, these connectors offer secure and reliable connections. With a wide operating temperature range of -65°C to 200°C, they are suitable for demanding military and aerospace applications. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating various contact types including M39029 rear release crimp contacts. Constructed with high-strength aluminum shells and available in different plating options such as cadmium and nickel, these connectors ensure durability and performance in challenging conditions. Their RoHS compliant versions provide environmentally friendly alternatives without compromising quality. Ideal for box mounting installations, these connectors guarantee efficient and robust electrical connections in critical systems.