MIL-DTL-38999 Series I connectors offer high performance in harsh environments with up to 128 contacts housed in an insert. Featuring front wall mount, rear wall mount, and jam nut receptacles, they ensure secure connectivity. These connectors, meeting military specification MIL-DTL-38999 I, are environmentally sealed and can operate reliably in temperatures ranging from -65 °C to 200 °C. With 9 shell sizes and 52 insert arrangements available, they accommodate diverse application needs. Utilizing M39029 rear release crimp contacts in various sizes, including coax and twinax, these connectors guarantee efficient signal transmission. Constructed with durable high strength aluminum shells and offering multiple plating options, such as electroless nickel and cadmium-free finishes, they ensure longevity and reliability. RoHS compliant, these connectors are ideal for demanding military and industrial applications, providing excellent conductivity and ingress protection.