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 5910-01-250-4013
NSN 5999-01-043-1601
NSN 6620-00-010-8190
NSN 5999-00-076-5521
NSN 6240-00-270-8182
NSN 5935-01-154-7440
NSN 5999-01-202-8674
NSN 6105-01-473-9568
NSN 5915-01-013-8995
NSN 5915-01-573-5980
NSN 6650-01-152-9425
NSN 2925-01-230-6100