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 configurations like front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in connectivity solutions. The connectors come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts. Constructed with aluminum shells and offering multiple plating options, including cadmium-free finishes, they ensure durability and performance. With gold contact plating, these circular connectors are ideal for military applications, meeting stringent MIL-DTL-38999 II specifications.