MIL-DTL-38999 Series II connectors offer robust performance with up to 128 contacts in an insert, designed for harsh environments with a wide operating temperature range of -65 °C to 200 °C. Featuring various mounting options including wall mount, jam nut, and box mount receptacles, these connectors ensure secure and reliable connections. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for efficient assembly. Constructed with aluminum shells and offering multiple plating options, including RoHS compliant finishes, these connectors guarantee durability and enhanced conductivity. Ideal for military and industrial applications, they provide environmental resistance and long-lasting performance.