MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting styles including front and rear wall mount, jam nut, and box mount, these connectors offer versatility for different applications. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure reliable connectivity. Constructed with aluminum shells and offering plating options like electroless nickel and cadmium finishes, they are suitable for military and industrial use. RoHS compliant options are also available, making them environmentally friendly.