It can be repaired with a wire screw. (1) measuring the specifications of the supporting bolts (nominal diameter and pitch, and the separation of metric and American system) using calipers and dental gauges; (2) after determining the thread specification, the matching length of the wire screw (also known as braces), ST tap, installation spanner, and punching machine (not necessary, can be used for the replacement of coarse iron rod); (3) repair installation procedure: first step, suitable for drill drilling; Step 2: tap the silk with ST tap; Step 3: install the fitted wrench into the bottom hole of the fitting length. Step 4: remove the mounting handle; Step 5: screw in and complete. You can find a picture of repairing a bicycle crank slide on the Internet.
