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 7035-01-462-2953
NSN 6135-00-180-5125
NSN 6220-01-066-8606
NSN 5925-01-365-2404
NSN 5999-00-222-4808
NSN 5895-01-048-9430
NSN 5935-00-862-7127
NSN 5990-00-980-0379
NSN 6105-01-557-0140
NSN 5945-01-557-3319
NSN 6240-01-213-9087
NSN 6110-00-296-0500