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 5975-01-235-3947
NSN 5915-01-529-9418
NSN 5835-00-307-3111
NSN 5910-01-182-6607
NSN 5920-01-383-5594
NSN 6105-01-431-6723
NSN 5990-01-442-3520
NSN 5895-00-842-9457
NSN 5935-01-008-5203
NSN 6645-00-580-9605
NSN 5950-00-099-9612
NSN 5920-01-604-2875