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 in applications. With options for front and rear wall mount as well as jam nut receptacles, the connectors ensure secure installations. Utilizing M39029 rear release crimp contacts, they guarantee reliable connections. Constructed with high-strength aluminum shells and various plating options, including RoHS certified finishes, they meet stringent quality standards. The connectors, classified under military specification MIL-DTL-38999 I, are ideal for demanding environments requiring durability and performance.