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 5915-01-061-1050
NSN 5855-01-541-0460
NSN 6135-00-500-2082
NSN 7035-01-528-7340
NSN 6110-00-061-9239
NSN 5925-00-856-4818
NSN 5996-01-188-7934
NSN 7035-00-371-7749
NSN 5835-00-689-0278
NSN 5998-01-527-5779
NSN 5935-00-067-5632
NSN 6620-00-740-3699