MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert and offering front and rear wall mount options, as well as jam nut receptacles. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Constructed with high strength aluminum shells and available in various plating options, including RoHS certified finishes, they ensure reliable performance. Utilizing M39029 rear release crimp contacts, these connectors provide secure and efficient connectivity. The environmentally sealed design and gold contact plating guarantee durability and conductivity, while the bayonet coupling mechanism allows for easy mating. With a service rating of M and an ingress protection rating of Environment Resistant, they meet stringent military specifications for reliability in the field.