On 06/06/2012 09:01 AM, Ernest Christley wrote:

Lehanover@aol.com wrote:

 
 
http://en.wikipedia.org/wiki/Safety_wire
 
http://www.avweb.com/news/maint/191176-1.html
 
 
 
Just google this to read it all as a PDF
 
AC 43.13-1B
<http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/0/99C827DB9BAAC81B86256B4500596C4E?OpenDocument>

Let me restate the question.

Running and twisting the wire is simple enough.  How do you get that tiny hole through the side of a 12 or 13mm nut?
With as many tiny drill bits as I've broken, it would be easier and cheaper to just buy them if they are available
someplace.

You can buy a jig to do it
http://www.amazon.com/Bikemaster-Safety-Wire-Drill-Guide/dp/B003DGN0HS

(the 1st hit when I googled 'safety wire drill guide')

 or you could make your own with a hunk of metal & a file.

Or, you could just measure the hole depth & make sure that the bolts don't bottom out. As you know, drilling a bolt head is a lot simpler. :-)

Charlie