MIL-DTL-38999 Series I connectors feature up to 128 contacts within an insert, offering robust environmental sealing and a wide operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they include M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. These connectors, with options for front wall mount, rear wall mount, and jam nut receptacles, are designed for harsh environments, boasting high strength aluminum shells and multiple plating choices such as gold, electroless nickel, and cadmium finishes. RoHS compliant variants are also offered, ensuring suitability for various applications requiring reliability and durability.