MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for rugged applications with an operating temperature range of -65°C to 200°C. These connectors, available in various mounting styles including front and rear wall mount, jam nut, and box mount, offer versatility in installation. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure reliable connections in demanding environments. The aluminum shells come in different plating options, including cadmium-free finishes, meeting RoHS compliance. Suitable for military and industrial use, these connectors provide secure, high-performance connectivity in harsh conditions.