MIL-DTL-38999 Series I connectors, part of the military specification, feature up to 128 contacts in an insert, providing robust connectivity in harsh environments. With operating temperatures ranging from -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they offer versatility in design. The connectors come in high-strength aluminum shells with options for different plating finishes, including cadmium-free choices. Offering reliable performance, they are environmentally sealed and meet RoHS compliance standards. Designed for back panel box mounting with bayonet coupling, these receptacles with removable crimp contacts ensure secure connections, making them suitable for a wide range of military and industrial uses.