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 5975-00-946-5324
NSN 5998-00-030-7104
NSN 5999-00-486-0490
NSN 5905-00-627-0323
NSN 6610-01-243-7140
NSN 6620-00-062-9722
NSN 6685-01-460-5031
NSN 6685-00-618-6696
NSN 5935-00-164-8323
NSN 6110-01-490-2349
NSN 6110-00-636-1234
NSN 6110-00-038-7230