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 5910-01-534-5054
NSN 5925-01-475-5075
NSN 6240-00-560-5426
NSN 2925-01-653-4657
NSN 6610-00-509-7868
NSN 6145-00-071-1154
NSN 5996-01-384-2115
NSN 5910-01-023-1406
NSN 6145-01-439-3239
NSN 5998-01-309-2925
NSN 6220-01-579-0296
NSN 5998-00-405-3392