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 5990-00-562-8413
NSN 6240-01-384-8802
NSN 5960-01-109-4828
NSN 6150-00-411-4064
NSN 6110-01-347-0954
NSN 6685-01-097-9062
NSN 5965-00-566-4221
NSN 6320-01-106-4414
NSN 6620-01-349-4469
NSN 5975-01-030-6933
NSN 6220-01-555-8332
NSN 5910-01-100-2053