The MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts, designed for harsh environments with an extensive operating temperature range of -65°C to 200°C. Featuring front and rear wall mount options, as well as jam nut receptacles, they ensure secure installations. These circular connectors, compliant with military specification MIL-DTL-38999 I, are built for reliability, utilizing M39029 rear-release crimp contacts in various sizes. Constructed with high-strength aluminum shells and available in multiple plating options, including RoHS-certified finishes, they guarantee durability and performance. Suitable for demanding applications, these connectors provide efficient electrical connections in challenging conditions.