MIL-DTL-38999 Series I connectors feature front wall mount, rear wall mount, and jam nut receptacles, ideal for harsh environment applications. With up to 128 contacts in an insert, these connectors are environmentally sealed and operate reliably between -65 °C and 200 °C. Designed for durability, they come in nine shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts in various sizes. The high-strength aluminum shells are available in different plating options, including cadmium-free finishes, ensuring RoHS compliance. With gold-plated contacts and electroless nickel coating, these connectors offer superior conductivity and corrosion resistance. Suitable for military and industrial use, they meet stringent MIL-DTL-38999 I specifications, guaranteeing performance and reliability in demanding environments.