The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert with front and rear wall mount, jam nut, and box mount receptacles. Featuring a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in aluminum shells with various plating options, including cadmium-free finishes, they ensure reliable performance. Utilizing M39029 rear release crimp contacts, these connectors come in 9 shell sizes and 52 insert arrangements. With a mating type of bayonet and contact gender of male, they are suitable for military and industrial use, meeting MIL-DTL-38999 II specifications for ruggedness and durability.