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 6620-01-441-7896
NSN 5835-01-068-7849
NSN 5985-01-519-9295
NSN 5910-00-779-3443
NSN 6135-01-422-1440
NSN 5910-01-105-1836
NSN 5895-00-107-0198
NSN 6145-00-101-9857
NSN 6145-00-162-6230
NSN 5990-00-554-0366
NSN 5935-01-598-2214
NSN 6685-00-773-0238