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Location Pin Symbol?
2

Location Pin Symbol?

Location Pin Symbol?

(OP)
Dear Friends

I am attaching a drawing, which has BLACK trangles in circle. some are 1/8 (SN 1 & 2), some are 1/4 ((SN 3 & 4), ), some 1/8 with a line in it ((SN 5 & 6). Any body can explain what is the meaning of this symbol. Is it location pin symbol?

Avinash Puri

RE: Location Pin Symbol?

Better to ask the GD&T forum.  

RE: Location Pin Symbol?

I can not see the whole print, but it looks like they just used those triangles to mark the holes having the same dim..That is why one "note" is sufficient.   

RE: Location Pin Symbol?

Some people do that just to ID holes that are the same.

I don't think it is "legal" to any standard.

RE: Location Pin Symbol?

2
They are called "part reference zero" or PRZ. I use them to tell the machinist my reference tandem for that view. They're used as a particular view origin and dimensional reference. It 's for machining purposes.

Regards,
Cockroach

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