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 6220-01-039-9872
NSN 5960-01-142-1995
NSN 6645-00-402-5622
NSN 6685-00-626-2419
NSN 5930-01-409-2952
NSN 5985-01-171-9567
NSN 6650-00-997-4337
NSN 5985-00-894-1251
NSN 5835-01-190-5192
NSN 7035-01-111-7206
NSN 5965-01-387-4984
NSN 6650-01-115-7981