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 5985-00-902-9935
NSN 5935-01-041-6579
NSN 5835-01-381-1824
NSN 5925-00-629-1974
NSN 5945-01-266-5388
NSN 5950-00-826-7735
NSN 5950-01-207-0929
NSN 6685-00-464-2773
NSN 6620-01-143-7913
NSN 5855-01-383-6860
NSN 5999-01-548-3363
NSN 5996-01-408-9796