Do you know what size it is ? I have to travel late notice with them in my carry on. My plan is take to them along with my Texas tackle split ring pliers. I assume tsa won’t care about the spit ring pliers as they aren’t sharp and tiny. My plan would be to take the hooks off and discard them if they tried to get me to dispose of them. What are your thoughts ? 

I wouldn’t sweat it. You can fly with “small fishing lures” per TSA. What’s your definition vs theirs is however could pose a problem. I mean, you’re flying with a (or multiple) 5” magdraft. I’d argue that the delta in-flight magazine is a more dangerous weapon than a treble hook. Have you seen pricing on some of those items???