Thread Form

[Richard MarksParticipant @richardmarks80868]

Gentlemen

I know the difference between Whitworth,BSF,Metric and UN threads but what form are AF threads composed of, I know AF means across flats but there I am stuck.

Regards

Dick

[Richard MarksParticipant @richardmarks80868]

[JasonBModerator @jasonb]

There is no AF thread, but it is sometimes wrongly used as an abreviation for “American Fine ” which should be refered to as “National Fine” for which the abbreviation is NF or UNF

 

AF is as you say a referance to the accross flats size of the bolt or nut hex head.

 

Jason

Edited By JasonB on 30/10/2009 17:54:14

[JohnFParticipant @johnf59703]

Have a look at this–someone else posted it on a nothe rpost and i came across it by chance!

http://www.gewinde-normen.de/en/index.html 

[Author]

Posts