MIL-STD-1913

[3DDave]

Regarding MIL-STD-1913, I just came across this jewel. The document is available on

http://quicksearch.dla.mil

and the following should be a link directly to the page (saving having to type 1913 into the top search box.)

http://quicksearch.dla.mil/qsDocDetails.aspx?ident_number=115317

Is there any rule they managed to follow? Pay attention to the 1999 amendment to the section diagram.

 

[JNieman]

Doesn't matter. Half the people alleging to manufacture "mil spec" pic rail commercially probably never actually read the MIL-STD-1913 doc anyways.

 

[swertel]

We've tried machining our own Picatinny Rails based on the spec. You can't do it.

Instead, we create our own drawing the closely follows MIL-1913, and then verify that our Rail actually fits the mating part before producing the full quantity.

--Scott
www.aerornd.com

 

[pylfrm]

3DDave,

In the 1999 amendment, are you referring to the "R 2X .060 MAX" being out of order? That's all I see changed.

Regarding the rest of the tolerancing, I wrote up some of my thoughts in thread1103-406027. Perhaps it will be of interest.


pylfrm

 

[3DDave]

Look at the datum references [-C-(m)] is not usual.