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 5935-01-422-0239
NSN 6320-01-255-2096
NSN 5945-01-576-1689
NSN 6645-00-801-8237
NSN 7035-00-003-7518
NSN 2925-00-871-4089
NSN 5950-01-042-9106
NSN 6135-00-299-6918
NSN 5965-01-095-1926
NSN 6645-00-735-1481
NSN 5960-00-106-6725
NSN 5999-01-238-9956