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 5855-00-862-3345
NSN 5915-01-491-4380
NSN 6110-01-582-5759
NSN 5910-01-534-5054
NSN 5975-00-995-9110
NSN 5930-01-161-2131
NSN 7035-00-481-5182
NSN 6620-01-350-5103
NSN 6685-01-021-0362
NSN 6685-01-625-1895
NSN 2925-01-448-2880
NSN 5945-01-207-1732