Holes through opposite corners parallel
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.)
Classification: Nuts of iron or steel
NSN 6110-00-402-7637
NSN 5990-01-159-5988
NSN 5950-01-494-6898
NSN 5945-00-405-3976
NSN 5945-01-466-1558
NSN 6645-01-595-4323
NSN 5905-01-088-9535
NSN 4140-00-754-8048
NSN 5975-00-185-5243
NSN 6130-01-425-8152
NSN 5895-01-618-6831
NSN 6135-01-551-0562