Ball end Allen head wrenches

Old 08-14-22, 07:30 PM
Norm201's Avatar
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Question Ball end Allen head wrenches

Is there a proper method or rule when to use the ball end of an Allen hex wrench? Someone told me that the ball end should never be used to make the final tightening of a set screw. Use only the flat end!
On the other hand, I'm told the ball end will strip before the set screw, thereby preserving the integrity of the socket set screw.
Is any of this true.
I never even considered the consequences one way or the other.
Old 08-14-22, 09:03 PM
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I would definitely use the flat end for final tightening.
I would not count on the ball end stripping before the hex head strips.
Old 08-15-22, 06:22 AM
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Most of what you have heard is true. The ball end is designed to allow the wrench to work at an angle. The drawback is there is less metal in contact with the screw so it is easier to strip. And because of the material removed to form the ball, they can be snapped off if you apply too much torque. The straight end of the wrench has the most metal so is stronger and all that metal gives it a strong grip in your fastener so is able to tighten more without stripping out.
Old 08-15-22, 01:38 PM
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The one that strips first is the one that:
Is most important
The most difficult to replace
Is on backorder

Murphy's Law 37(A)(2)
CircuitBreaker voted this post useful.

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