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 5855-01-594-7809
NSN 5855-01-284-7208
NSN 6650-00-927-3391
NSN 6135-01-415-1163
NSN 5998-01-452-2728
NSN 5998-01-296-5548
NSN 6105-01-478-8288
NSN 4140-01-618-4840
NSN 5910-01-560-4230
NSN 5855-00-004-0904
NSN 6150-01-162-4221
NSN 6650-00-254-9807