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 5925-01-025-0322
NSN 6645-01-450-0809
NSN 5985-00-784-3663
NSN 7035-00-902-8995
NSN 5996-01-485-3840
NSN 5950-01-298-8045
NSN 5990-01-390-2177
NSN 5975-01-135-8501
NSN 5835-00-711-3371
NSN 6105-01-534-5360
NSN 6220-01-423-0696
NSN 5945-01-614-7429