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 5985-01-190-2931
NSN 5855-00-079-2370
NSN 6110-01-152-1097
NSN 5915-00-233-6346
NSN 5965-01-103-0560
NSN 5998-00-013-0763
NSN 5910-01-362-0722
NSN 5999-01-220-1929
NSN 6645-01-434-2648
NSN 5920-01-597-0121
NSN 7035-01-411-6062
NSN 5996-00-751-9701