The MIL-DTL-38999 Series I connectors feature up to 128 contacts within an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various configurations including front and rear wall mount as well as jam nut receptacles, these connectors offer RFI grounding plugs for added versatility. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, they ensure reliable connectivity. Constructed with high strength aluminum shells and offered in different plating options such as gold, electroless nickel, and cadmium-free finishes, these connectors meet stringent military specifications. Suitable for demanding applications, they provide environmental resistance and durability, making them ideal for aerospace, defense, and industrial use.