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Who make a quality Allen Wrench?

The best set ive found other then snap-on are the bondus ones that have the English set silver guard and the metric set is gold guard.
The combo set. I havnt stripped one yet in the last 10 years or more.
I use them every day at work
I have broken one of the 5/64ths one or 1/16th tightening set screw on an endmill once.
I'm sure i didn't need it that tight.
 
Except when there is no choice, for my amateur world of mounting scopes, I greatly prefer Torx type screws like T10 & T15. I am talking about stuff like scope bases & rings not machine tools or bigger Allen fasteners. More than once I have backed off a stripped socket Allen screw by jamming a Torx type driver into the stripped Allen hole. My problem is not with the wrench it is with the Allen fasteners. This has occurred when using new Allen wrenches with sharp clean well fitting edges & surfaces.
 
Hex drive is a poor choice for the small screws due to the geometry and sensitivity to loose tolerance holes in soft steel. Torx is far superior in every respect.

RWO
 
Looking at a nice star shaped Torx hole, more surface area can be seen for the star shaped tool to apply force to. My Torx T10 & T15 drivers wear out and now I am evaluating which ones are tougher and last longer.
 
I've been using tekton for the small electronics. Things like a 0.050 and smaller.
Wiha micro bits are nice too.

-Mac
 
Bondhus. Ball drive is a horrible idea if you're concerned about strength. If you think the head is going to strip out, put some 180 grit lapping compound in it first.
 
Their ball drive makes up for when you are not squarely in the screw.

Maybe, but if I have to use one for some reason I don't bother re-using the screw. Ball heads will distort screw heads owing to the Very Much Smaller surface areas of contact involved, and whether those bear equally on the socket's six surfaces... or not.

They have their place in a tool box, but use them with caution knowing their limitations.
 
When I strip a hex head wrench, I step over to the belt sander and grind it back to a new point. Usually happens to the smaller sizes.
 

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