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 5930-01-331-7752
NSN 5910-00-947-1807
NSN 6685-01-281-8860
NSN 6685-00-934-8676
NSN 6645-01-651-9562
NSN 5835-01-535-0948
NSN 5985-01-234-5924
NSN 6145-01-381-1740
NSN 5935-01-253-6153
NSN 5915-00-261-5783
NSN 5990-00-008-1828
NSN 6685-01-567-8075