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 5998-00-801-7925
NSN 5985-00-480-1712
NSN 5996-00-212-8004
NSN 5985-01-089-8463
NSN 5835-00-589-6300
NSN 5945-01-027-1351
NSN 5855-00-135-0162
NSN 5998-00-770-5229
NSN 6240-00-175-6730
NSN 6610-01-386-0647
NSN 5975-01-611-2356
NSN 6620-00-197-5130