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 5975-00-860-6305
NSN 5925-01-241-2698
NSN 6220-01-398-8131
NSN 5990-01-353-6444
NSN 6110-00-075-6367
NSN 5855-01-162-5251
NSN 5960-00-103-0596
NSN 7035-01-377-6255
NSN 6105-01-125-6498
NSN 6105-00-886-0529
NSN 5920-00-544-6564
NSN 5930-00-267-6848