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 5895-01-568-5755
NSN 5935-01-033-4995
NSN 5920-01-185-2222
NSN 6145-00-594-7822
NSN 6320-01-481-7322
NSN 6220-01-601-6308
NSN 6220-00-754-3452
NSN 5985-01-517-0479
NSN 5915-00-269-9252
NSN 5965-01-122-5390
NSN 5925-01-475-1271
NSN 5996-00-432-6816