MIL-DTL-38999 Series I connectors offer reliable connectivity in harsh environments, featuring up to 128 gold-plated contacts in a durable aluminum shell. With a wide operating temperature range of -65 °C to 200 °C, these circular receptacles are environmentally sealed and MIL-DTL-38999 I compliant. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts for secure connections. Suitable for wall mounting, these connectors come in different plating options, including electroless nickel, ensuring longevity and performance in demanding applications. Non-RoHS compliant finishes are also available for specific requirements. With a service rating of M and a mating life of 500 cycles, they provide conductive and reliable socket connections, making them ideal for military and industrial use.