A hateful punk snarled subway service Tuesday morning by scratching a swastika onto the F train, transit sources said.

A train dispatcher spotted the anti-Semitic symbol scratched onto the front of a northbound F train at the 179th Street station in Queens about 8:10 a.m.

The MTA took that train out of passenger service and sent it to a yard in Jamaica, sources said.

The NYPD’s vandal squad is investigating the vandalism.