It shouldn't be an issue. Just pack it in your carry-on. Print out a copy of the brochure listed here: http://www.tsa.gov/travelers/airtravel/prohibited/permitted-prohibited-items.shtm

If TSA gives you a hard time, ask for a supervisor and point out that it is not a weapon, explosive or incendiary, which is what they are tasked to keep off planes. If that fails, also ask for your airline's GSC (Ground Service Coordinator). I really don't think that you should have a problem with it. But don't back down.