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 5835-00-823-6116
NSN 6650-01-607-6891
NSN 4140-01-376-5877
NSN 6110-00-989-2456
NSN 5975-00-296-5040
NSN 5930-00-111-4301
NSN 5855-00-925-0114
NSN 6145-01-237-2200
NSN 5960-00-163-3324
NSN 5990-01-408-6554
NSN 6110-00-418-9363
NSN 6645-01-328-6886