The MIL-DTL-38999/26 (D38999) Series III connectors are designed for harsh environments, featuring wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs. With 9 shell sizes and 54 insert arrangements available, these connectors offer versatility for various applications. Constructed with aluminum shells and gold-plated removable crimp contacts, they ensure reliable conductivity in demanding conditions. Meeting military specification MIL-DTL-38999 III, these connectors are suitable for aerospace, defense, and other high-reliability applications. Featuring a straight plug shell design with EMI/RFI shielding, the D38999/26WH21SN connector is specifically tailored for use in W-class environments, offering superior performance in extreme temperatures ranging from -65°C to 175°C. With a service rating of II and a mating life of 500 cycles, this connector guarantees long-lasting functionality in critical systems.