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 6130-00-277-4402
NSN 5965-01-431-9723
NSN 5920-01-652-0262
NSN 5975-00-549-9431
NSN 6105-00-231-4370
NSN 6685-01-481-3382
NSN 5950-00-114-1153
NSN 5920-01-415-0153
NSN 5996-01-227-2555
NSN 5895-01-634-0630
NSN 4140-00-083-1120
NSN 7035-00-421-8710