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 5915-01-512-8851
NSN 2925-01-389-6874
NSN 4140-00-078-9357
NSN 6110-01-047-5078
NSN 2925-01-426-3410
NSN 6650-00-292-9106
NSN 5975-01-472-2194
NSN 2925-00-149-0760
NSN 6610-01-643-2315
NSN 5985-01-570-5753
NSN 6145-01-012-2823
NSN 6105-00-538-0862