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Cig (Aerospace) (OP)
10 Jul 06 12:59
Hello all, I'm new here and have a question:

I need to decipher a river callout on a drawing, and I'm unsure of what this symbol is.

I have a series of rivets, and pointing to one of the holes is  cross with 4 quadrants. Is there a standard or publication that explains this?

The cross contains:
Upper left: B1
Upper Right: 5N
Lower left: C
Lower Right: 5

Thanks in advance.
ewh (Aerospace)
10 Jul 06 13:32
I'm not sure what the official standard is, but here is what I have become accustomed to using:

Upper left: Basic Code (there should be a block on the drawing defining these)

Upper Right:  Dash No. for Diameter; N = Head Near Side, F = Head Far Side

Lower Right:  Dash No. For Length

Lower Left:  D = Dimple, C = Countersink

Cig (Aerospace) (OP)
10 Jul 06 13:47
Beautiful. That's exactly what I was looking, thanks a bunch.
It's been a while since I've looked at a rivet callout, I didn't even know where to look. ;)

My sincerest thanks.
Heckler (Mechanical)
10 Jul 06 14:28
Cig,

Here is a website that is wealth of information regarding the subject of rivets.

https://etaf.textron.com/etaf/index.htm

Best Regards,

Heckler
Sr. Mechanical Engineer
SW2005 SP 5.0 & Pro/E 2001
Dell Precision 370
P4 3.6 GHz, 1GB RAM
XP Pro SP2.0
NVIDIA Quadro FX 1400
      o
  _`\(,_
(_)/ (_)

Never argue with an idiot. They'll bring you down to their level and beat you with experience every time.

Kwan (Aerospace)
10 Jul 06 18:39
NAS523 is the spec you need.  It will decode the upper left corner for you.  
KENAT (Mechanical)
10 Jul 06 19:01
So is that website and the spec riveting reading?

Sorry, couldn't resist. smile
ctopher (Mechanical)
10 Jul 06 21:46
My neighbor works one of the machines that makes those rivets. He works a lot of overtime.

Chris
Systems Analyst, I.S.
SolidWorks 06 4.1/PDMWorks 06
AutoCAD 06
ctopher's home (updated 06-21-06)

Cig (Aerospace) (OP)
11 Jul 06 8:08
Thanks for all the replies. This is a great resource, I think I'll be spending quite a bit of time here.

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