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Simple way to properly tighten set screws

Imagine a clock face under your set screw assembly. Set screw is tight enough when wrench bends the distance of about one hour (see explanation)

Set screws – how tight is tight enough?

To tighten new, standard, alloy, cup point set screws, install an allen wrench with the short end in the socket, long end in your hand, and tighten until the wrench bends or twists about 30° (1 hour on a clock face). Then the set screw is as tight as it should be. More tightening only risks damaging the set screw, allen wrench or both.

AS9120B certified
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