The MIL-DTL-38999 Series I connectors offer rugged reliability for demanding environments, featuring up to 128 contacts in an insert. Designed for harsh conditions, they are environmentally sealed and operate efficiently in temperatures ranging from -65°C to 200°C. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. With front wall mount, rear wall mount, and jam nut receptacles, they ensure secure connections. Utilizing M39029 rear release crimp contacts, they guarantee durability with a mating life of 500 cycles. Suitable for military applications, these connectors provide optimal conductivity and ingress protection, making them essential for critical operations.