Common Hex Key Sizes

Hex key kit with stand klein tools.

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. Also called hex keys allen keys are an essential for bike maintenance. Differ ence in 1 1000s of an inch. Substituting uncommon hex sizes.

Everything from adjusting your brakes to tightening your seat post will require an allen key. Use ball end hex keys at an angle off axis to the screw. 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. Lastly there s one other added benefit to having both sae metric hex keys.

Hex key equivalent sizes. However the 1 4 sae hex wrench will likely work in place of a 6 5 mm wrench. 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. If you only own a set of short allen keys consider getting at least the 8 and 10mm sizes in a longer length.

They re designed to provide 360 rotation at angles up to 35. 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. 5mm hex or t25 torx wrench. Interchangable 0 028 and 0 7mm.

Hex fasteners are common in all sorts mechanical equipment and devices including bicycles motorcycle engines and assemble it yourself furniture aka ikea. 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. Hexagonal ones are great for easy grip but the folding ones give you more sizes. A hex wrench or allen wrench features a hexagonal shape and can be used with automotive plumbing and electrical applications.

Hex keys are measured across flats af which is the distance between two opposite parallel flat sides of the key. Common metric hex key sizes. Hex keys with t shaped handles can provide increased turning power and more comfortable grips. Remember to be wary of the leverage when tightening a bolt.

In the united states larger metric half sizes like 6 5 mm aren t standard in most hex key sets. Hex key standard sizes.