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 5930-01-531-5318
NSN 6130-00-088-6011
NSN 6645-00-025-4771
NSN 5905-01-512-1898
NSN 6220-01-147-4500
NSN 5935-00-398-1584
NSN 5935-00-827-0621
NSN 7035-01-571-8784
NSN 5920-01-351-0366
NSN 5960-00-682-4996
NSN 5996-01-131-0006
NSN 6220-01-040-4324