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 5930-00-616-1861
NSN 5985-01-401-5387
NSN 6145-01-145-7005
NSN 7035-00-753-0695
NSN 5925-01-646-6148
NSN 5935-00-018-6515
NSN 5895-00-654-5812
NSN 5999-00-106-5351
NSN 5895-01-314-2446
NSN 5855-01-356-5284
NSN 5935-00-760-7240
NSN 5999-01-234-0838