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 5835-00-059-5854
NSN 6105-00-345-4273
NSN 6220-01-336-5053
NSN 6130-01-123-7586
NSN 6685-00-981-2113
NSN 6130-01-065-6071
NSN 5960-01-381-2478
NSN 5855-00-455-6070
NSN 5835-00-816-0394
NSN 5950-00-584-4571
NSN 5998-00-679-4001
NSN 5975-01-517-4445