MIL-DTL-38999 Series I connectors offer robust connectivity solutions with up to 128 contacts in a sealed insert, ideal for harsh environments. Featuring various mounting options like front wall, rear wall, and jam nut receptacles, they ensure secure installations. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors provide flexibility for diverse applications. Constructed with high-strength aluminum shells and available in different plating options such as electroless nickel and cadmium finishes, they guarantee durability and reliability. Operating within a wide temperature range from -65°C to 200°C, these connectors are suitable for demanding military and industrial settings.