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 5835-00-761-5615
NSN 5999-00-666-3838
NSN 7035-01-077-6041
NSN 6650-00-466-1697
NSN 5945-01-537-0202
NSN 4140-00-248-6089
NSN 5975-00-982-7070
NSN 7035-00-849-5526
NSN 6320-01-123-6814
NSN 6220-00-515-0437
NSN 6320-01-512-2031
NSN 5960-01-653-9441