MIL-DTL-38999 Series I 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 including front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding plugs for added versatility. With 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts, ensuring reliable connections. Constructed with high-strength aluminum shells and offering a selection of plating options such as cadmium and electroless nickel, they are suitable for a range of applications. These connectors are RoHS compliant, meeting environmental standards for a more sustainable solution.