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 6135-00-262-6807
NSN 6620-01-627-0478
NSN 2925-01-043-9786
NSN 6135-01-519-7879
NSN 5910-01-344-5556
NSN 6150-00-139-6036
NSN 5935-01-340-5177
NSN 6130-01-440-5847
NSN 4140-01-285-8753
NSN 5975-01-467-6363
NSN 6685-01-587-1469
NSN 6645-01-366-4344