MIL-DTL-38999 Series II connectors offer high-density connectivity with up to 128 contacts in a sealed insert, ideal for harsh environments. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they ensure versatile installation. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable connections. Constructed with aluminum shells and offering multiple plating options, including RoHS-certified finishes, they guarantee durability and compliance. With a wide operating temperature range of -65°C to 200°C, these connectors are suitable for demanding applications in aerospace, defense, and industrial sectors.