MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for rugged applications. Offering front wall mount, rear wall mount, and jam nut receptacles, they ensure secure connections. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating various needs. Utilizing M39029 rear release crimp contacts, they guarantee reliable performance. Constructed with high-strength aluminum shells and available in different plating options, including RoHS compliant finishes, these connectors provide durability and versatility. Suitable for military and industrial use, they are essential for maintaining connectivity in demanding conditions.