MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with operating temperatures ranging from -65 °C to 200 °C. Offering various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they ensure versatility in installations. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and plated with options like cadmium or nickel, they guarantee durability and reliability. Compliance with RoHS standards and a service rating of M make them suitable for a wide range of applications, including military and industrial use.