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 5965-00-932-4591
NSN 5975-00-061-7035
NSN 4140-00-710-5660
NSN 5990-00-170-9553
NSN 5950-01-431-9818
NSN 5990-00-067-6791
NSN 5998-01-576-8811
NSN 6110-01-523-3095
NSN 5925-01-600-6772
NSN 5985-01-518-1641
NSN 5990-00-636-4218
NSN 5945-01-646-3717