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 5895-01-593-6306
NSN 5996-01-617-0370
NSN 5950-01-388-7534
NSN 6105-01-452-1020
NSN 5990-01-198-6336
NSN 5910-00-974-6137
NSN 5945-00-518-6711
NSN 6220-01-381-1074
NSN 6130-00-953-4301
NSN 5990-01-389-1196
NSN 5915-00-205-9797
NSN 5985-01-377-8497