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 7035-01-145-5059
NSN 5950-01-215-5906
NSN 6150-01-023-7710
NSN 6645-01-549-8910
NSN 6220-00-458-4633
NSN 7035-01-408-3699
NSN 5910-01-358-7310
NSN 5985-00-073-6553
NSN 5895-01-142-3440
NSN 5965-01-657-0651
NSN 6610-01-371-5039
NSN 5905-00-062-5264