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Unread 02-12-2014, 23:00
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AKA: Nick Aarestad
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Re: Fasteners: Black Oxide or Zinc Plated?

Quote:
Originally Posted by FrankJ View Post
Commercial bolt threads are almost universally better than shop made. The commercial threads are rolled rather than cut & leaves compressive strain in the threads.
Sorry, not super familiar with the manufacture of bolts, but could you explain what you mean by "compressive strain?"

On another note, in 2012, 2220 used grade 5 stainless 1/2-20 (if I remember correctly) bolts as axles on our robot. We made it the entire season without bending an axle significantly. Not saying it was a good idea, but it worked in our case.
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