Common Hex Key Sizes

Hex fasteners are common in all sorts mechanical equipment and devices including bicycles motorcycle engines and assemble it yourself furniture aka ikea.

Common hex key sizes.

Hex key standard sizes. Use ball end hex keys at an angle off axis to the screw. If you only own a set of short allen keys consider getting at least the 8 and 10mm sizes in a longer length. Hexagonal ones are great for easy grip but the folding ones give you more sizes.

Interchangable 0 028 and 0 7mm. 5mm hex or t25 torx wrench. However the 1 4 sae hex wrench will likely work in place of a 6 5 mm wrench. Substituting uncommon hex sizes.

They re designed to provide 360 rotation at angles up to 35. Everything from adjusting your brakes to tightening your seat post will require an allen key. In the united states larger metric half sizes like 6 5 mm aren t standard in most hex key sets. Hex key kit with stand klein tools.

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. Common metric hex key sizes. 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. 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.

Stan dard sae hex key sizes inches metric hex key sizes mm notes compares standard and metric allen wrench sizes where they closely match and where they don t wrench equivalence 15 key set. Remember to be wary of the leverage when tightening a bolt. Hex keys are measured across flats af which is the distance between two opposite parallel flat sides of the key. Hex key equivalent sizes.

Also called hex keys allen keys are an essential for bike maintenance. 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. Hex keys with t shaped handles can provide increased turning power and more comfortable grips. A hex wrench or allen wrench features a hexagonal shape and can be used with automotive plumbing and electrical applications.

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. Differ ence in 1 1000s of an inch.