I'm confused. Is it likely a 4.0 million NPM would have a round bolt?
No, it would be a flat bolt. Keep in mind though parts switching on a NPM can be a frustrating experience due to their parts number system and the fact they did not go in sequential serial numbers. It takes some research to get it just right.
Edited by - always learning on 10/23/2015 10:46:06 AM