Can You Bring Tools on a Plane? (2026 TSA & EU Rules)
TSA allows tools under 7 inches in carry-on. EU and UK are stricter. Multi-tools with blades are always banned from carry-on. Full breakdown inside.
Can You Bring Tools on a Plane?
It depends on the tool, the country, and whether you are putting it in carry-on or checked luggage. The US TSA has a relatively clear size-based rule for carry-on. EU and UK security authorities give officers broader discretion. For checked luggage, almost all hand tools are permitted worldwide.
The TSA Rule: 7-Inch Limit for Carry-On
The TSA's rule for hand tools in carry-on is based on length:
- Tools under 7 inches in total length: permitted in carry-on
- Tools 7 inches or over in total length: must go in checked luggage
The 7-inch measurement is the total length of the tool, not just the working end. A screwdriver with a 5-inch shaft and a 2-inch handle is 7 inches total — it must be checked.
This length rule applies to: screwdrivers, wrenches, pliers, spanners, nut drivers, and similar hand tools.
EU and UK Rules: Broader Discretion
In the EU and UK, the rules are less mechanical than the TSA's 7-inch cutoff. The governing principle is whether a tool "could be used to damage the aircraft or harm crew or fellow passengers." This gives security officers significant latitude to prohibit tools regardless of size.
As a practical matter, EU and UK security officers are more likely to challenge tools in carry-on than TSA officers. A screwdriver that sails through a US checkpoint may be stopped at a European airport. If you are traveling in Europe, the safest approach is to put all tools in checked luggage.
What's Allowed vs. Banned in Carry-On
| Tool | US (TSA) | EU / UK |
|---|---|---|
| Screwdriver (flathead) under 7 inches | Allowed | Generally allowed, officer discretion |
| Screwdriver (Phillips) under 7 inches | Allowed | Generally allowed, officer discretion |
| Screwdriver 7 inches or over | Banned | Banned |
| Pliers under 7 inches | Allowed | Officer discretion |
| Wrench / spanner under 7 inches | Allowed | Officer discretion |
| Allen key / hex key (short) | Allowed | Officer discretion |
| Tape measure | Allowed | Allowed |
| Multi-tool with blade | Banned | Banned |
| Swiss Army Knife (no blade) | Allowed | Allowed |
| Hammer | Banned | Banned |
| Saw (any type) | Banned | Banned |
| Power drill | Banned | Banned |
| Angle grinder | Banned | Banned |
| Chisel | Banned | Banned |
| Axe / hatchet | Banned | Banned |
| Crowbar / pry bar | Banned | Banned |
Multi-Tools: The Blade Rule
Multi-tools — Leatherman, Victorinox, Gerber, and similar products — frequently contain a knife blade alongside pliers, screwdrivers, bottle openers, and other components. If a multi-tool contains a blade of any length, the entire tool is prohibited from carry-on. The fact that the blade folds away or is small makes no difference.
A multi-tool that genuinely contains no blade — some exist, designed specifically for travelers — may be allowed in carry-on. Check each component before travel. If there is any doubt, check the tool.
Swiss Army Knives
A classic Swiss Army Knife with a blade must be checked. The blade, even at its shortest, disqualifies it from carry-on. However, there are Swiss Army-style tools without blades — Victorinox makes several models designed for carry-on travel. These are allowed in carry-on under TSA rules.
Tape Measures
Tape measures are allowed in carry-on by the TSA and are generally accepted in the EU. The metal retractable hook at the end of the tape is not classified as a blade.
Power Tools
Power drills, circular saws, jigsaws, angle grinders, sanders, and any other power tool are banned from carry-on everywhere. They may be placed in checked luggage with one critical exception: lithium-ion battery packs must travel in carry-on (not checked luggage) due to fire hazard rules. Pack the tool body in checked luggage, the battery in your carry-on.
Practical Recommendation
The 7-inch rule gives US travelers some carry-on flexibility for small hand tools. Despite that flexibility, the practical advice is to put tools in checked luggage whenever possible. The consequences of a tool being confiscated — you lose the tool, miss your flight, or face security delays — are not worth saving a bag fee. If you are on a hand-luggage-only fare and must bring tools, stick to items clearly under 7 inches for TSA travel, and be prepared for extra scrutiny in European airports.
For valuable tools or specialist equipment, ship them ahead or rent at your destination.
Frequently asked questions
Can I bring a screwdriver in my carry-on?▾
In the US, yes — TSA allows screwdrivers under 7 inches in carry-on. In the EU and UK, security officers have broader discretion and may prohibit tools they consider a threat regardless of size. Checking them is always safer.
Are multi-tools like a Leatherman allowed in carry-on?▾
No. Any multi-tool that contains a knife blade is banned from carry-on worldwide, regardless of blade length. The whole tool must go in checked luggage.
Can I bring Allen keys (hex keys) in carry-on?▾
Short Allen keys are generally permitted in carry-on under TSA rules as they are under 7 inches. EU officers may question them. A full L-shaped hex key set fits easily in checked luggage.
What happens if tools are found in carry-on at security?▾
Prohibited tools will be confiscated. You cannot go back to check your bag after clearing security in most airports. The tool is surrendered with no compensation.
Can I bring a power drill in checked luggage?▾
Yes — power drills are permitted in checked luggage. Remove the battery if it is a lithium-ion battery pack; those must travel in carry-on due to fire risk regulations.
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