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 6685-00-135-5435
NSN 6650-00-144-4555
NSN 5998-00-305-4087
NSN 5985-01-147-2294
NSN 6610-01-538-8141
NSN 5920-01-051-6638
NSN 5999-01-360-0593
NSN 5945-01-025-1163
NSN 5998-01-130-9342
NSN 5975-01-297-3455
NSN 6135-01-153-8027
NSN 6645-01-276-7818