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 5975-01-091-3278
NSN 5910-01-009-8963
NSN 5835-01-229-6964
NSN 6135-01-148-8531
NSN 5905-01-445-8709
NSN 5950-01-394-5352
NSN 5920-01-442-7685
NSN 6610-01-441-8364
NSN 5960-01-218-2858
NSN 6135-01-139-1700
NSN 5965-01-436-0390
NSN 5835-01-651-7208