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 6135-01-558-4194
NSN 6645-00-833-2395
NSN 5960-00-256-1203
NSN 7035-01-506-2143
NSN 6150-00-496-9064
NSN 6135-01-391-6515
NSN 6220-01-104-6861
NSN 7035-01-348-5153
NSN 5996-01-480-8956
NSN 6645-01-471-4960
NSN 6320-00-937-5625
NSN 5996-01-286-9089