The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance. Available in various shell sizes and insert arrangements, they utilize rear-release crimp contacts for easy installation. Constructed with high-strength aluminum shells and offering a choice of plating options, including RoHS certified finishes, they ensure durability and compliance. Suitable for military applications, these connectors come in receptacle types for wall mounting, with bayonet coupling for secure connections. With gold contact plating and a mating life of 500 cycles, they guarantee robust conductivity. These connectors, with their conductive and environment-resistant design, are ideal for demanding industrial and military environments.