MIL-DTL-38999 Series I connectors offer rugged, high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. With a wide operating temperature range of -65 °C to 200 °C, they are suitable for demanding applications. Available in nine shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, they come in a range of plating options, including cadmium-free finishes. These RoHS compliant connectors are ideal for military, aerospace, and other rugged applications requiring reliable electrical connections in challenging environments.