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 5965-01-632-9334
NSN 5990-01-303-9920
NSN 6685-01-412-3191
NSN 6645-01-457-8642
NSN 6645-01-536-6111
NSN 5998-01-415-5163
NSN 6650-01-632-1574
NSN 5855-00-925-0114
NSN 6220-00-647-3096
NSN 5996-01-460-8631
NSN 5915-01-437-8267
NSN 5835-00-632-8621