593 - Set Screw M10 x 1 for DAG 2, 2.2 and 3

The Park Tool 593 Set Screw (M10 × 1) is a precision replacement fastener designed for use with Park Tool derailleur alignment gauges — specifically the DAG-2, DAG-2.2, and DAG-3 models. This set screw plays a key role in securing gauge components in position during hanger measurement and adjustment, ensuring the tool functions accurately and reliably.