MIL-DTL-38999 Series I connectors offer reliable connectivity in harsh environments with up to 128 contacts in a sealed insert. Suitable for a wide temperature range from -65 °C to 200 °C, these connectors come in various configurations including front and rear wall mount receptacles and RFI grounding plugs. Featuring high-strength aluminum shells with multiple plating options, they ensure durability and performance. Compliant with military specifications, these circular connectors with gold-plated removable crimp contacts are ideal for demanding applications, providing a mating style of bayonet coupling. Designed for 500 mating cycles, they guarantee long-term reliability in environments where environmental resistance is essential.