The MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. These connectors, available in various shell sizes and with 52 insert arrangements, offer front and rear wall mount options, as well as jam nut receptacles. Utilizing M39029 rear release crimp contacts, they ensure reliable connectivity in demanding applications. With high-strength aluminum shells and a choice of plating options including cadmium-free finishes, these connectors provide durability and versatility. RoHS compliant and offering superior ingress protection, they are ideal for military and industrial use.