The ANSI/NEMA FB 1-2014 standard covers fittings that are a part of electrical raceway and cable systems designed for use as intended by the requirements of NFPA 70. Specifically covers fittings for use with non-flexible tubular raceways—rigid and intermediate metal conduit and EMT—and with flexible raceways and cable. Adopted by the U.S. Department of Defense.
The 2014 edition of the standard was published on August 14, 2014. Go Here for more details about this and the other NEMA FB, OS, and RV standards: