The MIL-DTL-38999 Series II 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 mounting options like front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors ensure reliable connectivity in demanding applications. Constructed with aluminum shells and offering multiple plating options, including RoHS compliant finishes, they guarantee durability and performance. Perfect for military and aerospace use, these connectors are ideal for ensuring secure and efficient electrical connections in rugged conditions.