Surface finish conversion metric to English standard
I am a sales engineer for my company and am quoting a brass part for a customer. The part is in metric dimensions. On an internal bore there is a requirement to maintain a surface finish of N5.
I have checked the Machinery's Handbook and could not find the information I need.
I need an RMS surface finish equivalent for N5.
precision machining - Baltimore, Maryland
Maybe this will be helpful: http://www.finishing.com/75/60.shtml. I hope you find this as useful as I did.Nicola Wilcox
technical apprentice with a lock manufacturer. - Birmingham, England
October 16, 2009
These "N" codes represent the new ISO standards
N5 refers to the following:
Rt - 2.0
Ra - 0.4
RMS - 17.6
- Kings Mountain, North Carolina