Return to 4mm x 12mm Machine Key (am-1249)
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OK Key, variable tolerances. March 17, 2017
Reviewer: Chris Hafner from Wolfeboro, NH United States  
These keys have variable tolerances. Much like many keys that you might buy at the local HW store. I just expected better.

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Machine Key February 16, 2017
Reviewer: Sue from Columbus, OH United States  
These fit the motors perfectly.  Not having the capability of cutting them to fit exactly, this makes life much easier!

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Did not fit on PG27 February 6, 2017
Reviewer: Roy Visser from Greentown, IN United States  
Did not fit in grove of either PG27 or  AM2088.  It's made of an extremely hard steel, difficult to file or sand down to fit.  Would have been nicer if it had fit.

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September 14, 2016
Reviewer: Remy Demont from Anaheim, CA United States  


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Just What We Needed June 20, 2016
Reviewer: Mark Vitek from Clermont, FL United States  
Just the key stock we needed.

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June 15, 2016
Reviewer: Gustave A Michel II from Slidell, LA United States  


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Good Key, not quite the right size May 24, 2016
Reviewer: William Walter from Lowell, MA United States  
We used this key with the PG71 gear motor and the 16 Tooth Gear (am-2088). The key is the right width, but it really wants to be 4mm x 5mm from what I could tell. The key did not fit tight and would loosen up with use. We ended up needing to use a shaft collar to keep the key from falling out. Even then the interface would get sloppy with use.

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Machine key 4mmx12mm March 29, 2016
Reviewer: Alex Domkowski from Franklin, TN United States  


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Fits! March 16, 2016
Reviewer: Curtis robertson from Upsala, MN United States  
no additional machining needed.

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February 23, 2016
Reviewer: Anonymous Person from Owatonna, MN United States  


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