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 6610-00-457-0325
NSN 6145-00-459-4899
NSN 5960-01-007-5838
NSN 5975-00-286-8506
NSN 6135-01-368-2785
NSN 5960-01-360-4107
NSN 7035-00-361-5975
NSN 5910-01-534-7699
NSN 5910-00-596-1417
NSN 5910-00-774-3042
NSN 5915-01-403-2599
NSN 5998-00-987-3605