Review on 🔩 Hard-to-Find Quick Fastener 014973253790 - 4 Piece Set by David Skyline

I bought this bolt to replace my original harmonic dampener bolt on my 1972 307ci SBC. it felt loose and didn't develop good torque. I pulled it out and turned on the microphone. here its overall diameter is 0.2-0.3mm smaller than two different screws I tested. It was enough for me to almost strip the threads on the connecting rod. let's say my crank threads were probably worn out, but the micrometer screw doesn't lie. Reinstalling the original 1972 shutter solved my problem. In summary: The harmonious damper screw is no good!