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 5950-01-363-8439
NSN 6105-01-644-8962
NSN 6610-00-034-3709
NSN 5990-00-765-1264
NSN 6620-00-444-6972
NSN 6145-00-135-0260
NSN 6110-01-604-6138
NSN 6650-01-504-4745
NSN 5960-00-431-8739
NSN 6610-01-485-5083
NSN 5998-01-622-7429
NSN 5998-01-379-1654