Imperial Allen Key Sizes In Mm

Buy yourself a metric set and an imperial set.

Imperial allen key sizes in mm. 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. 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. 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. You won t find those exact keys in a metric set.

Hex key equivalent sizes. As you ll notice there isn t always a perfect substitute. Hex plus offers a bigger contact surface in the screw head and so reduces the chance of wear and rounding off the. 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.

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. Interchangable 0 028 and 0 7mm. If you re looking for a quick imperial to metric conversion guide for allen wrenches you ve come to the right place. Horusdy hex key set allen wrench set inch metric 30 piece mm 0 7mm 10mm sae 0 028 3 8 best unique tool gift for men wiha 35392 5 piece mini l key short hex metric set bondhus 20393 l wrench hex key double set multi one size.

Imperial to metric for allen keys. We ve provided the best substitute sae hex key for each given metric size. 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. 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.

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. Common metric hex key sizes. Differ ence in 1 1000s of an inch. Allen keys imperial these standard allen keys offer a larger range of sizes than the stainless types.

The first one is millimeters or metric while the second is in inches imperial size chart. In this case an allen wrench or hex key chart can make finding the right size for your socket head much easier. The inch or millimeter size may have rubbed off with use or may be entirely too small to read. 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.

Most allen wrenches have the size stamped clearly on the side of the tiny angled tool.