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 5835-01-616-6131
NSN 6110-00-477-9677
NSN 5950-00-601-9673
NSN 5905-01-275-8686
NSN 2925-01-633-4048
NSN 6240-00-415-6488
NSN 5996-01-555-7690
NSN 5985-00-450-5350
NSN 6145-00-054-2915
NSN 7035-01-422-6850
NSN 5925-00-154-0372
NSN 2925-01-134-9175