MIL-DTL-38999 Series II connectors house up to 128 contacts in an insert, ensuring robust connectivity in harsh environments. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. With a wide operating temperature range from -65 °C to 200 °C, these connectors are suitable for demanding applications. Available in 9 shell sizes and 52 insert arrangements, they accommodate diverse contact configurations, including M39029 rear release crimp contacts. Constructed with aluminum shells and offering multiple plating options, including cadmium-free finishes, they meet stringent performance and environmental standards. The connectors, compliant with MIL-DTL-38999 II specifications, are ideal for military and aerospace applications where reliability is paramount.