MIL-DTL-38999 Series II connectors, designed for rugged environments, feature up to 128 contacts in a sealed insert. Operating efficiently in temperatures ranging from -65 °C to 200 °C, these connectors come in various configurations like front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes with 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. The connectors, made of aluminum, offer plating options including cadmium finishes. With RoHS certified variants, they ensure reliable performance in demanding applications. Perfect for military and industrial use, these connectors provide EMI/RFI shielding and durability with a service life of 500 cycles.