MIL-DTL-38999 Series II connectors offer reliable connectivity in harsh environments with up to 128 contacts in an insert. Designed for durability, these connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering multiple plating options including cadmium-free finishes, these connectors ensure longevity and performance. Whether for military or industrial applications, their EMI/RFI shielding and socket contact style guarantee optimal signal integrity. With RoHS compliance and a service rating of M, they meet stringent quality standards for reliable operation.