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 5905-01-092-6924
NSN 2925-01-083-3986
NSN 6145-01-531-6756
NSN 6320-01-203-9864
NSN 5945-00-393-1191
NSN 6320-01-006-6138
NSN 6135-00-500-1173
NSN 6150-01-441-0823
NSN 5998-00-062-0024
NSN 5855-01-100-3272
NSN 6240-01-023-0424
NSN 6620-01-437-3146