The MIL-DTL-38999 Series II connectors offer robust connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they feature various mounting options including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable performance. Constructed with aluminum shells and offering multiple plating options, they ensure durability and versatility. With a wide operating temperature range from -65°C to 200°C, these connectors are ideal for demanding applications. RoHS compliant finishes are also available, making them a sustainable choice.