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 6110-01-349-7035
NSN 5910-00-421-4724
NSN 5996-00-114-4071
NSN 5945-01-585-2985
NSN 5915-01-446-2342
NSN 6645-01-656-6416
NSN 5935-01-188-7546
NSN 5920-00-943-4022
NSN 5945-01-619-4458
NSN 5950-00-106-5292
NSN 5998-00-683-1333
NSN 6105-00-840-6433