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 5925-01-425-5903
NSN 6645-00-183-8812
NSN 7035-01-206-0337
NSN 5835-00-213-9811
NSN 5999-00-050-1802
NSN 5999-01-406-3489
NSN 5895-00-539-8322
NSN 6320-01-094-2634
NSN 5950-01-004-0441
NSN 6685-01-198-5776
NSN 5960-00-967-7026
NSN 5835-00-489-9569