MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts in an insert, ideal for harsh environments. Featuring front and rear wall mount options, as well as jam nut receptacles, these connectors are versatile. Engineered for durability, they can operate in temperatures ranging from -65 °C to 200 °C. With various shell sizes and insert arrangements available, they accommodate diverse needs. Using M39029 rear release crimp contacts, they ensure secure connections. The high-strength aluminum shells come in different plating options, including cadmium-free finishes for RoHS compliance. These connectors, with their bayonet coupling and straight plug design, are essential for military and industrial applications requiring reliable performance in demanding conditions.