The MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an insert, suitable for harsh environments. Featuring front and rear wall mount options, as well as jam nut receptacles, they ensure secure installations. Utilizing M39029 rear release crimp contacts, these connectors come in 9 shell sizes and 52 insert arrangements, with a wide range of plating choices including cadmium-free finishes. Built to withstand extreme temperatures from -65 °C to 200 °C, they are ideal for military and industrial applications, providing reliable and durable electrical connections.