Common Hex Key Sizes

In standard measurements the most common allen wrench sizes for the tasks listed above that is automotive repair bike work and furniture assembly are the 5 32 inch 3 16.

Common hex key sizes. Hex key kit with stand klein tools. 5mm hex or t25 torx wrench. Remember to be wary of the leverage when tightening a bolt. Hex keys with t shaped handles can provide increased turning power and more comfortable grips.

Common sizes of allen wrenches although allen wrenches come in a wide range of sizes there are a few sizes in particular that tend to be more commonly used than others. Damage to the fastener or the tool can result from using a hex wrench that is too small for the socket for example a 5 mm tool used in a 5 5 mm socket. Common metric hex key sizes. They re designed to provide 360 rotation at angles up to 35.

Of these sizes some of the more popular ones are 2 5 mm 3 mm 4 mm 5 mm 6 mm 8 mm 10 mm. If you only own a set of short allen keys consider getting at least the 8 and 10mm sizes in a longer length. Hex fasteners are common in all sorts mechanical equipment and devices including bicycles motorcycle engines and assemble it yourself furniture aka ikea. Substituting uncommon hex sizes.

Fixing bolts number and sizes vary. Newer campy cranks attach at the center to the bottom bracket with a 10mm bolt. Hex key equivalent sizes. Hexagonal ones are great for easy grip but the folding ones give you more sizes.

In addition to the precision sizes mentioned above the common metric allen wrench sizes are 1 5 mm 2 mm 2 5 mm 3 mm 4 mm 4 5 mm 5 mm 5 5 mm 6 mm 7 mm 8 mm 9 mm 10 mm. Use ball end hex keys at an angle off axis to the screw. In the united states larger metric half sizes like 6 5 mm aren t standard in most hex key sets. A hex wrench or allen wrench features a hexagonal shape and can be used with automotive plumbing and electrical applications.

Differ ence in 1 1000s of an inch. Hex keys are measured across flats af which is the distance between two opposite parallel flat sides of the key. Also called hex keys allen keys are an essential for bike maintenance. However the 1 4 sae hex wrench will likely work in place of a 6 5 mm wrench.

Hex key standard sizes. Everything from adjusting your brakes to tightening your seat post will require an allen key.