MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, providing robust connectivity for harsh environments. With environmental sealing and an impressive operating temperature range of -65 °C to 200 °C, these connectors are suited for demanding applications. Available in various shell sizes and insert arrangements, they offer versatility for different connection needs. The connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. Featuring bayonet coupling and utilizing M39029 rear release crimp contacts, they ensure reliable performance. Whether for front wall mount, rear wall mount, or jam nut receptacles, the MIL-DTL-38999 I connectors meet stringent military specifications and are ideal for aerospace, defense, and industrial applications.