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 5920-00-717-4490
NSN 6685-01-106-6051
NSN 5960-00-721-1744
NSN 6620-01-155-6564
NSN 6320-00-857-4073
NSN 2925-01-077-3310
NSN 5920-00-008-1636
NSN 7035-01-642-4593
NSN 6220-01-495-3301
NSN 5998-01-377-2497
NSN 4140-00-960-6573
NSN 5996-01-449-7131