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 6320-01-515-7913
NSN 6105-00-932-3627
NSN 6610-00-139-1105
NSN 5855-01-147-4785
NSN 7035-00-064-7008
NSN 6650-01-406-9852
NSN 6130-01-010-3603
NSN 7035-00-108-4421
NSN 6685-00-846-4516
NSN 5985-00-608-0239
NSN 5945-00-681-0371
NSN 5965-01-245-1552