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 6105-01-038-4084
NSN 5925-01-582-6520
NSN 6685-01-573-0701
NSN 5945-01-216-0878
NSN 5950-00-228-4256
NSN 5930-00-065-4446
NSN 6145-01-479-8135
NSN 6135-00-708-0892
NSN 6130-01-332-3865
NSN 6150-00-189-6100
NSN 4140-01-508-0508
NSN 5910-00-818-6855