MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an insert, meticulously designed for harsh environments. Featuring front and rear wall mount options, as well as jam nut receptacles, they ensure secure installations. With a wide operating temperature range of -65 °C to 200 °C, these connectors are suitable for diverse applications. The use of M39029 rear release crimp contacts guarantees reliable connections, available in various sizes including coax and twinax. Constructed with durable aluminum shells and multiple plating options such as electroless nickel and cadmium finishes, they provide enhanced corrosion resistance. Meeting military specification MIL-DTL-38999 I, these circular connectors are ideal for demanding environments where rugged performance is essential.