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 2925-00-092-6526
NSN 6220-01-255-0258
NSN 6645-01-079-3741
NSN 5920-01-043-4848
NSN 6685-01-398-4172
NSN 5950-01-359-8952
NSN 5835-00-451-2982
NSN 6685-00-581-8868
NSN 6620-01-286-2204
NSN 5950-00-541-8789
NSN 5965-01-089-8579
NSN 5915-00-944-6257