Imperial Allen Key Sizes In Mm

These allen keys or wrenches from wera feature a hex plus head on the short arm and a six sided ball head on the long arm.

Imperial allen key sizes in mm.

You won t find those exact keys in a metric set. Imperial to metric for allen keys. 1 5 mm is a close substitute for hex size 1 16 but use caution with sizes this small substituting metric allen wrenches for sae sizes with so many items manufactured in the united states sae hex screws are still prominent throughout the world. Most allen wrenches have the size stamped clearly on the side of the tiny angled tool.

But before you choose to reference this chart you must know that we always recommend that you upgrade to a separate metric hex key set. Hex plus offers a bigger contact surface in the screw head and so reduces the chance of wear and rounding off the. Allen keys imperial these standard allen keys offer a larger range of sizes than the stainless types. As you ll notice there isn t always a perfect substitute.

Differ ence in 1 1000s of an inch. If the bolts seem to be in between sizes this size is too loose and the next size up is too big switch to the other. If you re looking for a quick imperial to metric conversion guide for allen wrenches you ve come to the right place. For instance metric size 9 mm doesn t have an imperial counterpart.

We ve provided the best substitute sae hex key for each given metric size. The first one is millimeters or metric while the second is in inches imperial size chart. Buy yourself a metric set and an imperial set. 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.

The inch or millimeter size may have rubbed off with use or may be entirely too small to read. In this case an allen wrench or hex key chart can make finding the right size for your socket head much easier. The third table is related to more specific allen keys and it shows the correlation between the hex size in inches and the long short arm ibn millimeters. 1 8 inch would be 3 175mm so you might be able to get away with the 3mm key but it would be a little loose in a 1 8 inch socket.

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. Common metric hex key sizes. On the left hand side we have our sae to metric conversion guide for hex keys that provides the best substitute sae allen wrench for each given metric size. The tables below are basically identical but available in different measurements.

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.