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 5960-01-379-6687
NSN 5905-00-529-0508
NSN 5930-00-393-3930
NSN 4140-00-397-9252
NSN 6135-00-891-4944
NSN 5990-01-411-5930
NSN 5920-00-025-7895
NSN 5965-00-424-9636
NSN 5960-01-523-9098
NSN 5945-00-223-7265
NSN 5905-00-909-1778
NSN 5925-00-492-6228