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 5965-01-502-2078
NSN 5975-01-592-3231
NSN 6150-01-464-5085
NSN 5996-00-062-6212
NSN 6110-01-570-7613
NSN 5835-01-442-6482
NSN 6110-01-631-4165
NSN 6145-01-463-7128
NSN 5950-00-078-8437
NSN 5915-00-396-8087
NSN 5910-01-403-2812
NSN 5985-01-420-2221