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 5935-01-634-0668
NSN 7035-01-521-9817
NSN 5895-01-537-0718
NSN 6650-01-216-2707
NSN 6130-00-489-9835
NSN 5835-01-199-1078
NSN 5920-01-575-0177
NSN 6645-01-088-5244
NSN 5998-01-412-5183
NSN 5945-01-653-3201
NSN 5895-01-442-3791
NSN 5905-01-505-0699