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 5996-01-412-7936
NSN 5910-01-323-4818
NSN 5915-01-068-4628
NSN 5960-00-835-3928
NSN 6685-00-720-3525
NSN 6645-01-069-3286
NSN 5998-00-270-9302
NSN 5950-01-162-8101
NSN 5855-01-175-2465
NSN 5945-00-199-7779
NSN 5965-01-290-0535
NSN 5895-00-661-1773