Allen Key Sizes For Bolts

Allen key also known as hex key hexagon key socket key ln key sizes and its dimensions can be very handy while designing and selecting fasteners for your application.

Allen key sizes for bolts.

Allen head bolts. Metric allen key table from gt engineering oldham. These dimensions of allen keys can be used to check the accessibility of your bolts were space is limited. A hex key allen wrench or allen key is a simple tool used to drive bolts and screws with hexagonal sockets in their heads.

Gessner houston tx 77040 4015 ph. In this video i demonstrate some of the techniques that we use regularly on site to remove rounded allen head bolts or hex key head bolts. Allen keys are available in long short arm tee key type and also available. Screw size decimal equiv.

Before placing the hex key into the bolt make sure the head is clean of dirt and debris. Also available from the nut place. G j hall specialist tools. Counterbore countersink diam in 60 c clearance drills d diam in height in diam in a depth in b.

The smaller size of allen wrench can easily strip a hex bolt or be stripped down itself. The tool is usually formed of a single piece of hexagonal rod of hard steel with blunt ends that are meant to fit snugly into the screw s socket bent in an l shape with unequal arms the tool is usually held and twisted by the long arm creating a large torque at the. Metric allen key table. Imperial to metric for allen keys.

For instance metric size 9 mm doesn t have an imperial counterpart. 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. Drive sizes for us allen drive screws. Push fit tube fittings.

Screw diameter drive size. Hex key screw head. As you ll notice there isn t always a perfect substitute.