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 6105-01-336-0534
NSN 6685-00-237-4138
NSN 6110-01-614-5563
NSN 5935-01-396-0242
NSN 5960-01-495-0859
NSN 5905-01-408-8342
NSN 5915-01-500-2147
NSN 5985-00-456-3199
NSN 4140-00-170-5152
NSN 2925-01-236-3547
NSN 7035-00-064-7008
NSN 5965-01-484-7925