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 5950-00-998-2110
NSN 5910-01-184-9350
NSN 5990-00-858-0395
NSN 6240-00-034-5909
NSN 5960-00-850-6633
NSN 5998-00-902-0203
NSN 5935-01-399-7158
NSN 5975-00-513-8966
NSN 5895-00-184-0843
NSN 6685-00-900-5428
NSN 5996-00-900-5251
NSN 6620-01-392-6180