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 5905-01-179-5251
NSN 2925-01-106-3552
NSN 6320-01-219-5174
NSN 5920-01-216-5219
NSN 5935-01-521-3204
NSN 5915-00-553-8755
NSN 5835-00-554-0399
NSN 5895-01-103-3498
NSN 6135-01-026-9960
NSN 5975-01-267-1790
NSN 5855-01-289-8496
NSN 6105-00-231-2020