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 5985-01-460-4463
NSN 5975-00-782-6389
NSN 5950-00-820-4003
NSN 5960-01-315-6993
NSN 6130-01-621-3040
NSN 5905-01-379-7437
NSN 7035-00-585-2113
NSN 6240-00-067-7526
NSN 4140-01-273-7788
NSN 6240-01-213-4905
NSN 5950-01-423-9397
NSN 6685-01-321-7931