Cops have collared a suspect in the hammer attack of a straphanger in a Manhattan subway station, police said.

Jose Moreno, 47, was arrested Friday afternoon and charged with two counts of assault, according to cops.

Moreno allegedly hit the unsuspecting subway rider in the back of the head with a hammer while he waited for the southbound A train at the 175th Street station in Washington Heights at 11 a.m. Sunday, according to police.

“I’m gonna f–k someone up,” the unhinged man allegedly yelled before the attack.

The 46-year-old victim was treated at the scene by EMS but did not need to be hospitalized.