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 6145-01-406-8024
NSN 5930-01-515-2976
NSN 5925-01-471-0376
NSN 6645-00-679-8203
NSN 5960-00-275-7497
NSN 6130-01-410-7551
NSN 5920-01-634-0064
NSN 5855-00-304-7163
NSN 6320-01-606-2508
NSN 5910-01-261-9536
NSN 4140-00-526-4505
NSN 5930-01-137-3158