MIL-DTL-38999 Series II connectors offer reliable performance in harsh environments, featuring up to 128 contacts in a sealed insert. With an impressive operating temperature range of -65°C to 200°C, these connectors are ideal for demanding applications. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in multiple sizes. Constructed with durable aluminum shells and offering plating options like electroless nickel and cadmium finishes, they ensure long-term durability. Meeting military specification MIL-DTL-38999 II, these connectors are suitable for critical operations in aerospace, defense, and industrial sectors.