MIL-DTL-38999 Series I connectors feature up to 128 contacts with environmental sealing for reliable performance in harsh environments. Operating between -65°C and 200°C, these connectors are versatile and durable. Available in various shell sizes and insert arrangements, they use M39029 rear release crimp contacts for secure connections. The high-strength aluminum shells come with different plating options, including cadmium-free finishes for RoHS compliance. With options for front wall mount, rear wall mount, and jam nut receptacles, these connectors offer flexibility for different applications. Suitable for military and industrial use, they ensure reliable connectivity with a mating type of bayonet coupling.