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 key sizes for bolts.
Metric allen key table.
Hex key screw head.
Counterbore countersink diam in 60 c clearance drills d diam in height in diam in a depth in b.
Screw diameter drive size.
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Size diam ete r hex key size 6605 n.
Allen head bolts.
The smaller size of allen wrench can easily strip a hex bolt or be stripped down itself.
Allen keys are available in long short arm tee key type and also available.
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Before placing the hex key into the bolt make sure the head is clean of dirt and debris.
For instance metric size 9 mm doesn t have an imperial counterpart.
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.
G j hall specialist tools.
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.
Push fit tube fittings.
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.
Screw size decimal equiv.
Metric allen key table from gt engineering oldham.
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.