MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts, ensuring reliable performance in harsh environments. Featuring front and rear wall mount options, as well as jam nut receptacles, these connectors are versatile in their applications. With a wide operating temperature range of -65 °C to 200 °C, they are suitable for demanding conditions. The connectors utilize M39029 rear release crimp contacts and come in various plating options, including cadmium-free finishes. Constructed with high-strength aluminum shells, they provide durability and longevity. Meeting military specification MIL-DTL-38999 I, these circular receptacles are ideal for use in aerospace, defense, and other rugged industries.