Re: What is this for?
Novel (or annoyingly rare) screw heads are a way of allowing a manufacturer of automatic torque drivers to equip a production line and then tie them to their own fasteners, all in the interests of quality control, you see. Like when Sears Robuck brought out their own compact cassette recorders, that only accepted Sears Robuck compact cassettes.
As with usb charging leads, when you think you have one of each, they invent another.
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Kevin
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