This hinge uses an M5x60mm cap screw as the pintle. The holes for the pintle are octagonal to allow them to be drilled to size. Also, one end is narrower so the threads will bite more into the plastic. The mounting holes are chamferred to accept screw heads.

Your printer needs to be fairly well tuned to print this. If your printer overextrudes or pads dimensions then the center piece will not break free as it's supposed to.

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Hinge