Jack, The following is just my opinion... so take it for what it's worth.
Typically fiber (or elastic) stop nuts are used when a cotter pin is NOT required. These are bolting applications where the bolt and nut is not subject to any rotational motion. If there is a possibility that the bolt or nut might rotate - such as in a control system application - then a bolt and nut that uses a cotter pin is usually required. I'm sure that there are other considerations involved also. If the bolt that you are replacing in your plane had a cotter pin in it as original equipment, then it probably had the cotter pin in it for a good reason, and probably shouldn't be replaced with an elastic stop nut. As far as the plating issue goes - the cad plating on aircraft bolts and nuts is applied after the parts are machined, so the cad plating will be in the cotter pin hole. I'm not aware of any other "plating" process that a typical aircraft bolt is subjected to. Mechanically speaking, if you drill an AN bolt correctly for a cotter pin, I think that it should be just as good as a factory drilled AN bolt. If you want to worry about legalities - which usually only become a problem AFTER other things have gone wrong - I guess if you use a different bolt than the one called out in the parts manual, you're probably making an "illegal" modification. Personally, I'd be more concerned about using an elastic stop nut in the wrong application than I would be about drilling an AN bolt. Of course, the best thing to do is to just buy the right bolt and put it in. Skybolt Aeromotive has just about every bolt in stock, and they will sell in small quantities. Their number is 1-800-223-1963. Good Flying, Wayne __________________________________________________________________________ ______ To unsubscribe from this list please send mail to [EMAIL PROTECTED] _______________________________________________________ >From the primaries to the mosh pits, get updates on the U.S. presidential race by joining our Politics list! http://www.topica.com/lists/politics
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