599 Series Fiber Optic Connectors (MIL-PRF-29504) The J599 series represents the military-standard fiber optic connector family, designed for high-speed, EMI-immune data transmission in demanding aerospace, defense, and industrial applications. It is constructed from 316L stainless steel, which can be adapted to various harsh. The J599/MT series of products is a high-density and environmentally resistant circular fiber optic connector developed based on the J599 series and MIL-DTL-38999 Series of circular fiber optic connectors, using standard MT multi-core rectangular fiber optic contacts and precision guide pin. Military-grade J599 Optical Connector for extreme environments. Features blind-mate design, vibration resistance, and low insertion loss. How long does the lead time of products? 35-45 working days.