MIL-DTL-38999 Series I connectors offer high-performance connectivity in harsh environments. With up to 128 contacts in an insert, they provide robust sealing and operate reliably in temperatures ranging from -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, this connector family offers versatility. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with high strength aluminum shells and offering various plating options, including cadmium-free finishes, these connectors are durable and corrosion-resistant. Their Bayonet coupling design and conductive gold-plated contacts ensure reliable performance, making them ideal for military and industrial applications that demand rugged reliability.