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 6685-01-100-2653
NSN 5925-01-175-6082
NSN 6610-01-562-9967
NSN 6320-01-103-1655
NSN 5998-01-505-2812
NSN 5998-00-985-1102
NSN 6610-01-227-7221
NSN 5895-01-174-4999
NSN 6130-01-565-1874
NSN 6610-01-119-2298
NSN 5965-01-565-8240
NSN 5996-01-286-4935