Metric Allen Key Sizes Chart

The good news is that just about every tool manufacturer has a range of allen wrench sets you can buy.

Metric allen key sizes chart.

Drilled head metric hexagon socket head cap screws normally are not available in screw sizes smaller than m3 nor larger than m36. Hex keys are measured across flats af which is the distance between two opposite parallel flat sides of the key. All dimensions are in millimeters. Lastly there s one other added benefit to having both sae metric hex keys.

Hex key equivalent sizes. 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. Tools for hex head bolts and socket heads metric tools for hex head bolts and socket heads diameter 1 4 5 16 3 8 7 16 1 2 9 16 5 8 3 4 7 8 1 1 8 1 1 4 1 3 8 1 1 2 1 3 4 wrench size 7 16 1 2 9 16 5 8 3 4 13 16 15 16 1 1 8 1 5 16 1 1 2 1 11 16 hex key size 3 16 1 4 5 16 3 8 3 8 7 16 diameter m16 mio m12 m14 m16 m18 m20 m22 m24 m30 wrench size 7 mm. Common metric hex key sizes.

However the 1 4 sae hex wrench will likely work in place of a 6 5 mm wrench. 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. Engineering metric hardware design data. The m3 and m4 nominal screw sizes have two drilled holes spaced 180 degrees apart.

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. In that case you ll want a range of allen wrenches to make sure you have the right size for every particular need. Most allen wrenches have the size stamped clearly on the side of the tiny angled tool.

Substituting uncommon hex sizes. Hex key standard sizes. Shoulder s selection torx drive sizing chart socket cap where can i a hex key gauge the ter proof torx wrench allen keytorx and star socket size chartpatibility table torx technical information eight tool co ltdtorx and star socket size charttorx head sizes 2yamahapatibility table torx technical information eight tool co ltdstainless steel torx head. In this case an allen wrench or hex key chart can make finding the right size for your socket head much easier.

Hex key size. Interchangable 0 028 and 0 7mm. In the united states larger metric half sizes like 6 5 mm aren t standard in most hex key sets. 11320 fm 529 rd bldg f houston texas 77041 tel 713 896 1166 fax 713 896 7879 tool size chart inch fasteners metric fasteners wrench sizes in hex key sizes in wrench hex key sizes mm diameter hex heavy hex diameter socket diameter hex socket 1 4 7.