MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating range of -65°C to 200°C. Available in various shell sizes and insert arrangements, they offer front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections in military and aerospace applications. Constructed with high strength aluminum shells and offered in multiple plating options including RoHS compliant finishes, they guarantee durability and reliability. Suitable for box mounting, these circular receptacles with gold-plated removable crimp contacts are essential for environments requiring environment-resistant connectivity.