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 4140-01-095-2062
NSN 7035-01-027-2259
NSN 5998-00-937-8065
NSN 5990-00-455-9865
NSN 6320-00-593-0379
NSN 6130-01-332-7053
NSN 5975-00-418-4967
NSN 6685-00-202-5233
NSN 5835-01-631-7390
NSN 5855-01-169-9228
NSN 6620-01-054-9346
NSN 6110-01-197-2905