Tools of 7 inches or smaller (end-to-end measurements when assembled) may be allowed in hand luggage. Power tools and all tools larger than 7 inches (measures from end to end when assembled) are prohibited in hand baggage; these items must be packed in hand baggage.
Hand tools can be packed in hand luggageand checked baggage, but there are size limits for hand luggage and restrictions for everything with blades. Certain small tools, such as screwdrivers, wrenches and pliers, are allowed as long as they are 7 inches or less in length.
You can also carry small nail clippers, clippers, and scissors with blades that measure 4 inches or less from the pivot point. All other tools must be securely wrapped (if sharp) and packed in checked baggage. You don't have to sacrifice basic preparation to go outdoors, fix things, or provide first aid just because you're flying somewhere with only hand luggage. These are the tools you can carry on planes, how to pack them and how to use them.
Passengers are not allowed to carry items such as fireworks, flares, hand grenades, explosive caps, dynamite or replicas of explosive materials aboard aircraft. As an additional note on multools and scissors, I understand that the maximum length of the tool cannot exceed seven inches; open it, expand the tools and try to create a configuration that maximizes the possible length of the tool. It has taught me to develop a flexible mental attitude backed by solid preparation, both in my own abilities and in the tools that complement them. The body measured less than 7 inches, but when fully assembled it measured more than 7 inches, meaning that strictly speaking it should not be packed in hand luggage.
If you bring power tools, loose or spare lithium-ion batteries cannot be packed in checked baggage and most of them in hand luggage. The organization pockets on the inside of the cover, on the top and on the sides make it easy to store tools neatly and without getting in the way. A small adjustable wrench and a small set of Allen wrenches will perfectly complement the limited capabilities of standard tool kits and both will perform jobs that the multi-tool's pliers cannot do. Most tools can be packed in checked suitcases, but remember not to pack replacement batteries for power tools in checked bags due to fire hazard.
While large tools, such as drills, saws, axes and anything over 7 inches long, are prohibited in hand luggage, you can bring some small tools onboard a flight. If your tools have sharp edges, make sure they are securely wrapped to avoid injury to baggage handlers. Any tool with a sharp or sharp edge, such as a hand saw, a box cutter or a drill bit, is also limited to checked baggage. You still have options for carrying tools on board, as well as other items that may be useful to you during the flight.
If you want to take your tool on an airplane, you'll have to pass it through airport security.