MIL-DTL-38999 Series II connectors with up to 128 contacts offer robust environmental sealing and a wide operating temperature range of -65 °C to 200 °C. Designed for harsh environments, these connectors come in various configurations including front and rear wall mount, jam nut, and box mount receptacles. Featuring 52 insert arrangements with M39029 rear release crimp contacts, they ensure secure and reliable connections. Constructed with aluminum shells and available in multiple plating options, including RoHS certified finishes, these connectors meet stringent military specifications. Ideal for demanding applications, they provide durability and high performance in aerospace, defense, and industrial settings.