MIL-DTL-38999 Series II connectors feature up to 128 environmentally sealed contacts, with an operating temperature range of -65 °C to 200 °C. These harsh environment connectors, available in various styles like front and rear wall mounts, jam nut, and box mounts, offer versatility in design. With 52 insert arrangements and M39029 rear release crimp contacts in sizes 22D to 12, they ensure reliable connectivity. Constructed with aluminum shells and plated with options like gold and electroless nickel, they meet demanding industrial requirements. RoHS compliant finishes are also available, making them suitable for diverse applications.