MIL-DTL-38999 Series I connectors offer versatile connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they feature front and rear wall mount options, alongside jam nut receptacles and RFI grounding plugs. Comprising 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts in various sizes, including coaxial and twinaxial. Crafted from high-strength aluminum, they come with a range of plating options, such as cadmium-free finishes. With a wide operating temperature range of -65°C to 200°C, these connectors are ideal for demanding applications that require reliability and durability.