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 5965-00-906-8281
NSN 5990-00-933-9110
NSN 6110-01-414-6634
NSN 5910-00-570-7524
NSN 5920-00-314-6870
NSN 5950-01-512-2430
NSN 6135-01-445-6589
NSN 5930-00-651-9705
NSN 6685-00-389-7935
NSN 4140-00-106-6780
NSN 5999-01-610-3823
NSN 5905-01-568-5470