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 5945-00-191-3891
NSN 5999-00-245-8219
NSN 2925-00-767-4245
NSN 5996-01-628-6336
NSN 5945-01-487-6446
NSN 4140-01-342-7930
NSN 5915-00-516-9987
NSN 5935-01-308-2222
NSN 6610-00-339-2981
NSN 6320-00-025-9910
NSN 6150-01-508-6663
NSN 5975-01-168-4374