Self-proclaimed "tough guy" Orrin Hatch isn't worried about losing a primary challenge, despite what happened over the weekend in Salt Lake City.

On Saturday Sen. Bob Bennett (R-Utah) was denied his party's nomination for a fourth term at the GOP state party convention. Hatch, Utah's senior senator, said he won't suffer a similar fate when he runs for reelection in 2012.

"I am not Senator Bennett, by the way, I am a tough guy and people know it," Hatch told Fox News Channel's "Happening Now" on Thursday. "No, I'm not concerned about it."

Hatch's "tough" talk comes after Rep. Jason Chaffetz (R-Utah) hinted he was planning to primary the six-term GOP incumbent.

"Maybe," a grinning Chaffetz said on MSNBC Wednesday when asked if he might wage a bid to unseat the veteran Hatch. "I'm not here to make a campaign announcement, but, yeah, I serve at the will of the people. I'll serve where they want me to serve," he said.

--Michael O'Brien contributed to this report.