Can you take a hammer or multi-tool on a plane?
The short answer
Hammers are not allowed in carry-on bags but are allowed in checked bags. Multi-tools with a knife of any length are prohibited in carry-on bags and allowed in checked bags if sheathed or securely wrapped.
Hammers
TSA lists hammers as not allowed in carry-on bags and allowed in checked bags. The TSA page we read carries a 2017 date, so check the current page before you travel.
Multi-tools
TSA says multi-tools with knives of any length are prohibited in carry-on bags. In checked bags they are allowed if sheathed or securely wrapped.
At the checkpoint
The final decision rests with the TSA officer. Pack tools in your checked bag when you can.
Sources: TSA: hammers, TSA: multi-tools. Read 7 November 2026. Rules change, so check the official page before you travel.
Frequently asked questions
Can I take a multi-tool without a knife?
The TSA page we read covers multi-tools with knives of any length. For a tool with no blade, check the TSA list for the specific item.
Can I take a screwdriver?
We did not find a TSA page for screwdrivers, so we do not state a rule. Check the TSA what-can-I-bring tool.