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 5855-01-222-1242
NSN 5895-01-606-9459
NSN 6130-00-265-1765
NSN 6145-01-548-2967
NSN 6110-01-025-6139
NSN 5855-01-212-6612
NSN 5910-01-011-0746
NSN 5945-00-635-3502
NSN 6105-00-232-9788
NSN 5990-00-466-2952
NSN 6620-01-545-7167
NSN 6150-00-689-8092