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 5996-01-141-6916
NSN 5960-00-158-4841
NSN 6320-00-456-2092
NSN 6650-01-115-7981
NSN 5930-01-455-5784
NSN 6135-00-985-7846
NSN 5999-00-475-6908
NSN 6150-01-053-3713
NSN 4140-00-757-3047
NSN 4140-00-403-4920
NSN 6130-01-149-7595
NSN 7035-01-305-1950