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 5910-01-318-6648
NSN 5935-01-457-8933
NSN 5895-01-443-9698
NSN 5910-00-779-3327
NSN 6650-00-927-3391
NSN 6220-01-543-8201
NSN 5996-01-555-2924
NSN 6105-01-246-5831
NSN 5950-00-753-0955
NSN 6135-01-536-4810
NSN 5985-01-579-2091
NSN 5975-00-577-8825