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Originally Posted by Qbranch
Why all the small screws???
Smallest i like to use on machines is 5-40 if i need to push it, 6-32 is as small as i like to go.
On the machinery's handbook note, its a definite must for any machinist or mechanical designer. I use it tons everyday at work. Has everything from horsepower calculations to roller chain sprocket profile construction to threading.... even heat treating and such. The copy i use is old, from the early 80's, its the 26th edition. I don't know how much they can change about it though, has most everything you'd want to know.
-Q
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Size your screws for their purpose.
If all you are doing is holding down a small piece of sheet matal that is not expected to see any sheer force then using a 2-56 screw is fine, and may even be preferrable considering weight and size requirements.