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 5945-00-281-4578
NSN 6150-00-920-9589
NSN 5945-00-338-3733
NSN 6130-01-570-5620
NSN 6685-01-046-4731
NSN 5910-01-238-5280
NSN 5930-01-091-6244
NSN 5930-01-152-6151
NSN 6240-01-578-7023
NSN 5915-01-339-9644
NSN 6130-01-303-5116
NSN 6320-01-054-3046