The Hitman was robbed in the fight as ring officials rang the bell at the behest of Vince McMahon when the Heartbreak Kid had the sharpshooter locked.
Hart, in an interview with Sports Illustrated, said when the show ended, the Deadman approached McMahon and demanded answers as to what happened in the fight and noted that the Phenom was one of the wrestlers McMahon listened to.
"Undertaker pounded on Vince's door after the 'Screwjob.' He said, 'Get your ass down to that dressing room and explain yourself,' and Vince wouldn't have listened to anybody else," Hart said.
Hart knocked out McMahon when the latter appeared in the locker room.
"I punched out Vince McMahon in the locker room, but the only reason Vince was in the locker room was because of Undertaker," Hart said.
The fight was supposed to be Hart's final fight at the company as he was leaving for the WCW. Hart said after he joined the WCW he asked the Phenom in a letter to take over as the leader of the locker room as the former was no longer with the company.
"I wrote Taker a letter when I left," Hart said. "I said, 'You have to be the voice of the dressing room and the leader now that I'm gone.'
"I always felt that I was the leader of the dressing room and looked after everything. If guys had a problem, they could come to me and I'd go to Vince and say, 'This guy has a problem, maybe you can help him.'"
The Undertaker took Hart's advice and became the general of the locker room. He listened to other wrestlers issues and then he would talk to Vince about it.
"Then Taker stepped in and became that guy," Hart said. "A lot of times he had to straighten out guys like Shawn Michaels and stand up for the other wrestlers. Undertaker was always a force in the dressing room."