As I understand it, Brian is correct. I have always used Standard AN bolts for prop bolts. I have also received Standard AN bolts from the prop manufacturer with the prop. Of course you can always safety any AN bolt with a drilled head properly without having the holes directly lined up. Special prop bolts make it fool proof with the additional holes drilled in the heads.
-Jeff -- "Brian Kraut" <brian.kr...@engalt.com> wrote: According to the Aircraft Spruce catalog the difference is that the heads have safety wire holes drilled in three directions instead of just one hole like normal drilled head bolts. This is to give you a better chance of getting the safety wire in the correct position for a good lock. Of course, this is only important when you are putting the bolts into a threaded prop hub. When you are using nuts on the back of the bolts like the Great Plains hub it doesn't really matter. Brian Kraut Engineering Alternatives, Inc. www.engalt.com -----Original Message----- What makes a Prop Bolt, a Prop Bolt, and where do you get them?
