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 5965-01-269-9521
NSN 5910-01-391-6580
NSN 5960-01-537-8161
NSN 6110-00-126-1989
NSN 5965-00-168-9624
NSN 5905-00-511-6788
NSN 5925-01-507-0411
NSN 6685-01-632-3583
NSN 5990-01-360-0711
NSN 6645-00-183-8812
NSN 5985-01-423-8577
NSN 5965-01-432-1943