MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with a wide operating temperature range of -65 °C to 200 °C. These circular connectors come in various configurations, including front and rear wall mount, jam nut, and box mount receptacles. Offering versatility, they are available as straight, RFI grounding, and standard plugs with 90-degree cable clamps. Compliant with military specification MIL-DTL-38999 II, they ensure reliability with M39029 rear release crimp contacts in multiple sizes. Constructed with aluminum shells and various plating options, such as gold, electroless nickel, and cadmium-free finishes, they provide durability and protection. Suitable for demanding applications, these connectors guarantee secure and efficient connectivity with their bayonet coupling and environment-resistant features.