One of the two fiends who sexually assaulted the same woman minutes apart on the same night in Brooklyn — appalling attacks that law-enforcement sources believe could have been coordinated — was busted and awaiting arraignment on Saturday, police said.

Nicholas Isaac, 17, who faces sex-assault, robbery and weapons charges in the brutal Aug. 31 attack, has a rap sheet that includes menacing with a weapon, auto theft, criminal possession of stolen property, petty larceny and trespass.

Isaac encountered the 31-year-old victim at 5 a.m. on Gates Avenue in Clinton Hill as she headed home from One Last Shag, a neighborhood bar, sources said. He allegedly put the woman in a bear hug and slammed her to the ground.

Isaac then told her that he had a gun, but never showed one, and tried to rape her, police said. The victim screamed and tried to fight him off during the 10-minute attack, according to law-enforcement sources.

“He finally overcame her and sodomized her,” one source said.

The 5-foot-7 man robbed the woman before fleeing, sources said — and the stunned victim barely had a chance to find help before she was accosted a second time.

She staggered a half-block away to Irving Place near Putnam Avenue, where she was then confronted by a second creep who immediately set upon her, sources said.

“This poor woman was dazed after the first assault,” one law-enforcement source said. “She was staggering around looking for help and the first person she encounters is the second perp.”

The second man also threatened that he had a gun, but he, too, never displayed one, sources said.

The 6-foot, 170-pound predator then made vulgar comments before sodomizing her while “she again put up a fight,” sources said.

“Both men told this woman exactly what they were going to do to her,” said one source. “Both said things that indicate they were working in tandem.”

Isaac was nabbed Friday after an eagle-eyed patrol officer saw him on a street and realized he matched a description of the suspect released by the Special Victims Unit. The victim identified Isaac in a lineup, police said.

Additional reporting by Erin Calabrese and Ben Feuerherd