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 5915-01-281-7383
NSN 6110-01-529-7753
NSN 5930-00-133-4033
NSN 5895-01-229-3863
NSN 6240-00-713-0237
NSN 5965-01-529-0579
NSN 5895-01-534-2506
NSN 7035-00-565-9623
NSN 5855-01-077-6264
NSN 5855-00-688-9954
NSN 5855-00-235-2676
NSN 7035-01-546-2769