Bolt Friction

[JohnWN]

Can anybody give me a good source for the thread and bolt head friction coeficients for various bolt materials and coatings?

 

[swertel]

I tend to like this site the best.

http://www.boltscience.com/

A secondary site is below.

http://www.fastenersources.com/

Hope these help. They have lots of information in them so you'll have to surf around a bit. Sorry I couldn't get a specific link for you.

--Scott

 

[JohnWN]

Thanks

Fastenersources was useful.

 

Try VDI2330 (German bolted joint standard)or the book by J Bickford ' An introduction to the design and behaviour of bolted joints' From experience the COF of a lightly oiled phosphate coated bolt is around 0.17. But don't quote me on this.

Good luck