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 6145-01-511-3697
NSN 5915-01-077-8461
NSN 5996-01-546-8404
NSN 5990-01-302-3733
NSN 4140-01-217-6290
NSN 6610-01-565-9857
NSN 6130-00-938-8463
NSN 7035-00-803-3056
NSN 6135-01-122-2656
NSN 2925-00-578-4068
NSN 5965-00-139-1039
NSN 5920-01-084-7975