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 5935-01-310-7795
NSN 6645-00-489-3155
NSN 5855-01-020-7982
NSN 5855-00-318-7185
NSN 6145-01-401-3713
NSN 7035-01-494-1161
NSN 6105-01-371-7491
NSN 6105-01-521-4261
NSN 6105-01-354-9170
NSN 6110-00-802-1305
NSN 5895-01-315-1880
NSN 6320-01-631-7828