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 5855-01-074-3335
NSN 6645-00-595-5431
NSN 6130-00-172-3763
NSN 5960-01-530-1808
NSN 6685-01-079-4538
NSN 6220-01-495-7661
NSN 6320-01-006-6138
NSN 6320-01-326-1316
NSN 5999-01-616-7950
NSN 5996-00-722-0838
NSN 5998-00-170-6756
NSN 5935-01-107-9238