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 5999-00-993-6449
NSN 7035-01-407-6413
NSN 5985-00-288-6001
NSN 6150-01-529-2837
NSN 5999-00-681-8605
NSN 6650-01-090-0719
NSN 5965-00-475-2759
NSN 6220-01-624-2825
NSN 2925-00-351-1015
NSN 5985-01-437-6781
NSN 5990-01-024-9659
NSN 5935-01-463-2046