Picked this up today and see that there is an old thread about it.
http://www.papawswrench.com/vboard/index.php?topic=2439.0
A google search seems to point to military use.
http://www.armyproperty.com/product/79061/A86/
http://www.iaircraftparts.com/5120001803490-a86-screwdriverflat-tip-79061-vaco-products-co.html
(http://i1082.photobucket.com/albums/j368/wvabe/007-22.jpg)
(http://i1082.photobucket.com/albums/j368/wvabe/008-21.jpg)
That's for that irrirating technition who walks around all day with a screw driver in his pocket. He has no idea how to use it, he just walks around with it. Once in a while he leans over what you were working on and randomly turns a screw like he knows what he is doing. When the thing you were fixing suddenly emits all of it's smoke, he then quitely slinks away...
QuoteWhen the thing you were fixing suddenly emits all of it's smoke, he then quietly slinks away...
EXACTLY!!!