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 4140-00-138-4139
NSN 6650-01-371-3551
NSN 5950-01-065-3021
NSN 5975-00-187-3520
NSN 5985-00-887-9933
NSN 5975-00-494-3244
NSN 5998-00-068-0233
NSN 6610-01-395-4918
NSN 6150-01-633-4519
NSN 6145-01-432-2440
NSN 5930-01-215-7852
NSN 5950-01-591-3413