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



Earnest,

an other approach is to use a device similar to those  shown in ACS catalog,  sized to your application. You stick the washer in between the nut and the manifold, when torqued appropriately, bend one tab to meed the flat of the nut and the other 1 or 2 to the manifold.
they come flat (not from ACS

Of course, to remove the nut, you have to peen the locking tab down and replace the washer on reassembly.

Beats drilling and safety wiring, much more secure and quite a bit easier.
Rich

(Click image for a larger view) 501867 locking tab washer is used to lock mounting bolts to Lord Mounts. Size:1/4 Not applicable to all lord mount installations

Description Part No. Price Buy 501867 CONT LK TAB WASHER L/M 08-50186-7 $1.37