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 styles like front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility in connectivity solutions. With aluminum shells and multiple plating options including cadmium-free finishes, they ensure durability and reliability. Utilizing M39029 rear release crimp contacts, they come in 9 shell sizes and 52 insert arrangements, accommodating different specifications. Meeting MIL-DTL-38999 II military specifications, these circular plugs with bayonet coupling, suitable for high-performance applications, guarantee secure and efficient connections.