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 6105-00-660-8882
NSN 6620-01-266-5545
NSN 5975-01-316-9339
NSN 5930-00-514-2095
NSN 5895-00-853-6364
NSN 2925-00-441-8252
NSN 6620-00-526-8996
NSN 5835-01-274-1035
NSN 7035-01-512-1826
NSN 6110-01-219-9926
NSN 6650-01-032-1786
NSN 5915-00-832-6976