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 7035-01-040-1180
NSN 6105-01-144-6814
NSN 5835-00-106-2120
NSN 5925-01-655-9963
NSN 5996-01-448-6814
NSN 6685-01-083-6634
NSN 6220-01-237-2488
NSN 5945-01-084-0783
NSN 7035-00-421-8710
NSN 5905-01-444-7213
NSN 6620-01-591-6681
NSN 5945-01-502-9531