MIL-DTL-38999 Series II connectors are designed for demanding environments, with up to 128 contacts housed in a sealed insert. Operating between -65 °C and 200 °C, these connectors offer rugged performance. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. 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 RoHS compliant finishes, they ensure durability and reliability. With a straight plug design and EMI shielding, these connectors are ideal for military and industrial applications requiring high-performance connectivity in harsh environments.