MIL-DTL-38999 Series II connectors feature up to 128 contacts within an insert, offering environmental sealing and a wide operating temperature range from -65°C to 200°C. These harsh environment connectors, available in various styles such as front and rear wall mount, jam nut, and box mount, ensure reliable performance in demanding applications. With 52 insert arrangements and M39029 rear release crimp contacts, they provide flexibility for different connectivity needs. The connectors, constructed with aluminum shells and offering plating options like electroless nickel and cadmium finishes, are suitable for military and industrial use. With RoHS-certified cadmium-free options available, these connectors guarantee both performance and compliance.