MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature various mounting options including front and rear wall mount, jam nut, and box mount receptacles. They are available in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with aluminum shells and offering multiple plating options, such as cadmium and nickel, these connectors ensure durable and reliable performance. With a wide operating temperature range from -65°C to 200°C, they are suitable for demanding applications. RoHS compliant finishes are also available for environmentally conscious operations. Perfect for military and industrial use, these connectors provide secure and efficient electrical connections in challenging conditions.