Gaga's Handcuffs -- TSA Approved

Lady Gaga cleared security at LAX yesterday with handcuffs, and it turns out she's nobody special ... because TSA doesn't prohibit them.

We were pretty shocked ... but a TSA spokesperson tells TMZ handcuffs are not on the "Prohibited Items List."

As for what you're not allowed to carry on ... the list includes, billy clubs, brass knuckles, kubatons, nightsticks, nunchakus, dynamite, flares, cattle prods, drills and gas torches.