MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. These connectors come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts. Constructed with aluminum shells and offered in multiple plating options, including RoHS certified finishes, they ensure durability and reliability. The connectors, meeting military specification MIL-DTL-38999 II, are ideal for applications requiring high performance in challenging conditions.