The 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 options including front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure secure connections. Constructed with aluminum shells and plated for durability, options include cadmium-free finishes. Meeting military specification MIL-DTL-38999 II, these connectors provide reliable performance in demanding applications.