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 5945-01-388-0856
NSN 6650-00-847-3492
NSN 2925-01-444-2061
NSN 6130-00-287-1972
NSN 5996-00-558-6491
NSN 6610-01-428-7779
NSN 6645-01-352-6583
NSN 5998-01-650-1851
NSN 5905-00-100-8033
NSN 6135-01-014-9755
NSN 5975-01-277-9482
NSN 6685-01-366-3120