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 5915-00-244-9805
NSN 5835-00-804-0569
NSN 5835-01-104-5497
NSN 5920-00-391-6252
NSN 5990-01-576-4383
NSN 6650-01-013-3243
NSN 6220-01-071-8437
NSN 6145-01-134-0835
NSN 2925-00-183-0458
NSN 6685-01-359-1760
NSN 6150-00-007-8884
NSN 5855-01-267-2751