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 5960-01-570-8605
NSN 5835-01-313-7054
NSN 5905-01-193-1480
NSN 5990-01-417-4402
NSN 5930-01-580-4972
NSN 6145-01-152-2417
NSN 5996-00-581-5810
NSN 5910-00-980-7537
NSN 5905-01-652-8626
NSN 5915-00-932-3040
NSN 5985-00-824-6087
NSN 6610-00-108-9546