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Unread 23-12-2014, 21:12
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Re: Good Screw Sizes fo General Use

Quote:
Originally Posted by mman1506 View Post
What's the advantage of using socket head over button head?
Socket head typically has a deeper hex, so it's harder to strip out.

I like 10-32's over 10-24's because it's harder to break the 10-32 tap. As a rule of thumb, I try to get more than 6 threads of engagement in a tapped hole in aluminum. With a 10-32, that works out to 6/32 = 0.1875", but a 10-24 requires 6/24 = 0.250".

Once you've used both for a while, it becomes easy to identify the different threads on bolts, and you can check to see if your nut threads easily on a known bolt.

We've used 1/4-20's as axles for flywheel shooters and pivots for catapult shooters, as well as gearbox mounts.

3/8-16 or 3/8-24 is our favorite for dead axles.