MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in a ruggedly designed insert. These environmentally sealed connectors are ideal for harsh environments, with an impressive operating temperature range of -65 °C to 200 °C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide versatile installation possibilities. Available in aluminum shells with a choice of plating options, including cadmium-free finishes, they ensure reliable performance while meeting RoHS compliance standards. With M39029 rear release crimp contacts in multiple sizes, these connectors guarantee secure and efficient connections. Suitable for military and industrial applications, these connectors are engineered for durability and longevity, with a mating life of 500 cycles. Whether for potting or general use, their conductivity and socket contact style make them a dependable choice for critical operations.