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 5960-00-983-5986
NSN 5975-01-227-1809
NSN 5930-01-014-5572
NSN 6105-01-003-7959
NSN 5950-01-282-6932
NSN 6610-01-534-6377
NSN 5998-00-131-2397
NSN 5930-01-222-3158
NSN 5910-00-609-7468
NSN 6650-01-399-8552
NSN 6130-01-166-1383
NSN 6320-00-937-5625