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 6130-00-008-9595
NSN 5935-01-486-6906
NSN 6320-01-067-0474
NSN 5960-01-589-6846
NSN 5975-01-530-0776
NSN 5920-00-888-5316
NSN 5985-00-788-8478
NSN 6130-01-130-1952
NSN 6130-00-822-0777
NSN 5960-00-204-7506
NSN 6135-01-408-9244
NSN 6220-01-089-6220