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 6320-01-006-6138
NSN 5996-00-226-5364
NSN 6110-01-204-6595
NSN 5950-00-067-9950
NSN 5950-01-577-2308
NSN 5996-01-470-0545
NSN 5998-00-189-7976
NSN 2925-01-067-4446
NSN 6645-01-354-7624
NSN 6610-01-614-3720
NSN 6610-00-450-4875
NSN 5990-01-205-5937