Imperial Allen Key Sizes In Mm

Common metric hex key sizes.

Imperial allen key sizes in mm.

Imperial to metric for allen keys. 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. 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. The tables below are basically identical but available in different measurements.

The inch or millimeter size may have rubbed off with use or may be entirely too small to read. Allen keys imperial these standard allen keys offer a larger range of sizes than the stainless types. For instance metric size 9 mm doesn t have an imperial counterpart. The first one is millimeters or metric while the second is in inches imperial size chart.

Interchangable 0 028 and 0 7mm. You won t find those exact keys in a metric set. We ve provided the best substitute sae hex key for each given metric size. Buy yourself a metric set and an imperial set.

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. 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. As you ll notice there isn t always a perfect substitute.

Hex key equivalent sizes. Differ ence in 1 1000s of an inch. 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. 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.

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. 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. Hex plus offers a bigger contact surface in the screw head and so reduces the chance of wear and rounding off the. Most allen wrenches have the size stamped clearly on the side of the tiny angled tool.

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.