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 6610-01-651-8659
NSN 6685-00-372-4670
NSN 6610-01-100-3662
NSN 6105-01-447-0007
NSN 7035-01-555-8793
NSN 5996-00-038-8276
NSN 6110-01-521-3725
NSN 5945-01-222-2684
NSN 6130-00-717-7666
NSN 2925-01-552-7151
NSN 5996-01-432-2356
NSN 5950-01-401-5321