MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts in an insert, designed for harsh environments. 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, boast a wide operating temperature range from -65°C to 200°C. With 52 insert arrangements and M39029 rear release crimp contacts, they provide versatile configurations for various applications. Constructed from high-strength aluminum, the connectors come in multiple plating options, including RoHS-certified cadmium-free finishes, ensuring durability and performance. Suitable for demanding environments, these connectors guarantee reliable electrical connections in critical operations.