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 7035-00-232-4043
NSN 2925-01-218-5556
NSN 5905-01-518-5088
NSN 7035-01-299-7240
NSN 5950-01-294-1465
NSN 5915-00-081-7815
NSN 6685-01-359-1137
NSN 5905-01-613-9187
NSN 5915-00-415-5349
NSN 5965-01-136-5657
NSN 5960-01-371-5494
NSN 5855-01-513-8367