A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 5960-00-991-1135
NSN 5985-00-057-6347
NSN 5998-00-459-1010
NSN 6135-01-555-3822
NSN 4140-00-507-2602
NSN 6220-01-492-9403
NSN 5920-00-170-4247
NSN 5999-01-021-8112
NSN 5835-01-659-9851
NSN 6150-00-103-6339
NSN 5935-00-470-3147
NSN 5910-01-522-1979