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 5930-01-629-8541
NSN 5905-01-078-1965
NSN 5895-00-074-2068
NSN 6110-00-105-7659
NSN 4140-00-269-3189
NSN 5950-01-110-6112
NSN 5996-01-426-6713
NSN 5905-01-578-6998
NSN 6105-00-111-3353
NSN 5835-01-013-9321
NSN 5996-01-421-3373
NSN 5925-01-104-4893