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 2925-00-221-4977
NSN 6130-01-009-2607
NSN 6650-00-405-0702
NSN 5930-01-581-4260
NSN 6130-01-017-3783
NSN 7035-01-075-7457
NSN 5835-01-222-2437
NSN 6610-00-238-1693
NSN 6320-01-629-1277
NSN 5920-01-107-5125
NSN 6650-00-342-6447
NSN 5998-01-216-6564