MIL-DTL-38999 Series II connectors offer robust performance with up to 128 contacts in an insert, designed for harsh environments. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, these connectors ensure secure and reliable connections. Compliant with military specification MIL-DTL-38999 II, they are built to withstand extreme temperatures ranging from -65 °C to 200 °C. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for efficient assembly. The aluminum shells come with a choice of plating options, including cadmium-free finishes for RoHS compliance. With EMI/RFI shielding, gold-plated contacts, and a service rating of I, they guarantee high conductivity and durability. Suitable for a wide range of applications, these connectors are ideal for demanding environments where reliability is paramount.