MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with a wide operating temperature range of -65 °C to 200 °C. Available in various receptacle types like front and rear wall mount, jam nut, and box mount, these connectors offer versatility in applications. With options for straight, RFI grounding, and standard plugs, they come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts. Made of aluminum, these connectors come with plating options including cadmium-free finishes, ensuring environmental compliance. Meeting military specification MIL-DTL-38999 II, they are reliable for demanding scenarios, with features like bayonet coupling and gold contact plating for optimal performance. Ideal for use in environments requiring durability and high performance, these connectors are essential components in various industries.