MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in a sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various styles including front and rear wall mount, as well as jam nut receptacles, they are versatile for different mounting requirements. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells and offered in different plating options such as electroless nickel and cadmium finishes, they meet diverse application needs. RoHS compliant variants are also available, making them environmentally friendly choices for demanding military and industrial settings.