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 5996-00-597-2234
NSN 5905-00-001-5892
NSN 5990-01-097-4721
NSN 5835-00-170-5238
NSN 7035-00-763-6180
NSN 7035-01-361-1311
NSN 6685-00-409-4970
NSN 5835-01-218-5560
NSN 5935-01-306-7006
NSN 6145-01-481-6172
NSN 5905-01-603-4565
NSN 5990-01-100-1840