The MIL-DTL-38999 Series II connectors boast high-performance with up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in applications. Available in aluminum shells with multiple plating choices including cadmium-free options, these connectors ensure reliable connectivity. Utilizing M39029 rear release crimp contacts, they provide secure connections with gold-plated removable crimp contacts. With a service rating of II and ingress protection, they are ideal for demanding environments, offering 500 mating cycles and conductivity assurance. RoHS compliance is available upon request. Explore the MS27499 connectors for military-grade performance in circular connectivity.