Allen Key Sizes For Bolts

Before placing the hex key into the bolt make sure the head is clean of dirt and debris.

Allen key sizes for bolts.

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 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. A hex key allen wrench or allen key is a simple tool used to drive bolts and screws with hexagonal sockets in their heads. As you ll notice there isn t always a perfect substitute.

Drive sizes for us allen drive screws. 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. A quick swipe with a q tip dipped in rubbing alcohol will pick up any dust that can collect in the corners of the hexagon. The smaller size of allen wrench can easily strip a hex bolt or be stripped down itself.

Also available from the nut place. Screw size decimal equiv. Metric allen key table. Size diam ete r hex key size 6605 n.

Counterbore countersink diam in 60 c clearance drills d diam in height in diam in a depth in b. Imperial to metric for allen keys. Hex key screw head. 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. For instance metric size 9 mm doesn t have an imperial counterpart. Push fit tube fittings. Allen head bolts.

G j hall specialist tools. Print this page. 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.