Hex key screw head.
Allen key sizes for bolts.
Also available from the nut place.
These dimensions of allen keys can be used to check the accessibility of your bolts were space is limited.
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.
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As you ll notice there isn t always a perfect substitute.
Before placing the hex key into the bolt make sure the head is clean of dirt and debris.
Metric allen key table.
For instance metric size 9 mm doesn t have an imperial counterpart.
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.
Screw size decimal equiv.
Screw diameter drive size.
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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.
Counterbore countersink diam in 60 c clearance drills d diam in height in diam in a depth in b.
Drive sizes for us allen drive screws.
Size diam ete r hex key size 6605 n.
Metric allen key table from gt engineering oldham.
Push fit tube fittings.
Imperial to metric for allen keys.
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.
Allen keys are available in long short arm tee key type and also available.
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.