I am performing a head gasket replacement on my '86 300E, and I stripped out the camshaft bolt while using the 6mm allen wrench. My plan is to reverse tap the bolt to get it out, but my question is what to replace it with? I don't know the part # of that bolt and can't seem to find it at the usual online stores...anyone know what the part # for this bolt is? (I've attached a pic showing which bolt I'm referring to)

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