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 5975-01-014-4648
NSN 5855-01-169-9228
NSN 2925-01-554-5246
NSN 6320-01-072-2073
NSN 5855-01-415-3987
NSN 5990-01-216-0148
NSN 6620-00-286-5721
NSN 6645-01-348-3359
NSN 2925-01-248-6028
NSN 5965-01-577-1984
NSN 5960-00-859-5059
NSN 4140-00-260-9521