Help with unknown drawing symbol

[Guess_who]

Does anyone know what this symbol is? It's pointing at a press fit plug. I can't seem to find it anywhere.

 

[crazy^millman]

It is related to a bounding or welding symbol maybe to a laser process?

[Guess_who]

6 minutes ago, C^Millman said:

It is related to a bounding or welding symbol maybe to a laser process?

IDK. The associated note calls for a press fit per B4.1 class FN2. So I wouldn't think it's welded.

EDIT: The only this I can find is welded flush, and I think the M might mean machined. 

[crazy^millman]

5 minutes ago, Ray D said:

IDK. The associated note calls for a press fit per B4.1 class FN2. So I wouldn't think it's welded. 

Push it back to the customer then. Ask for a engineering review our ECD to help explain what they are after.

[Guess_who]

2 minutes ago, C^Millman said:

Push it back to the customer then. Ask for a engineering review our ECD to help explain what they are after.

I'll kick it to our welding engineer first. See what he thinks. 

THanks for the help. 

[Del.]

I think it means counterbore or spotface minimum  maybe.

[crazy^millman]

Every reference I can think of doesn't show this symbol. I would like to know what is means as I have never seen it before. Please report back what you find out.

[Del.]

32 minutes ago, C^Millman said:

Every reference I can think of doesn't show this symbol. I would like to know what is means as I have never seen it before. Please report back what you find out.

I've seen it with counterbores but it usually has values for depth and diameter.

[Del.]

.

[jlw™]

i agre w/ Del.  I've seen it but always on an OD and accompanied by minimum cbore depth.

[Newbeeee™]

This sort of thing always annoys me. Perhaps I need to get out more...

The symbols are supposed to be universally understood rather than using language and writing the word "C/BORE".

However, rant aside  I think it's a cad jockey balls up. I've never seen it and spent 5 minutes googling and come up with nothing.

We know it's a counterbore, but as for the line underneath it or the "M", who knows.

Ray - If in doubt, ASK!

[BenK]

Its a weld symbol for plug or slot. The M stands for machine and the line is for flat. So weld in a plug and machine it flat. All standard symbols in the drafting world.

[Newbeeee™]

3 hours ago, BenK said:

Its a weld symbol for plug or slot. The M stands for machine and the line is for flat. So weld in a plug and machine it flat. All standard symbols in the drafting world.

Not sure about the wording of your statement .... But you I think you';re correct in the fact that the underline is a straightness call out (in the machining world) but appears to be a flush callout in the welding world. As the plug is round and the part is round, I'm asuming it would mean press it so it is under flush opposed to press it above flush and re-machine it so it is round and lovely and smooth so you don't see it...

[BenK]

8 hours ago, newbeeee said:

Not sure about the wording of your statement ....

Yep, that's why I'm not an English major. 

[CEMENTHEAD]

The weld symbol is              Plug weld, line is Flush, M is machined finish

if it was a G it would be ground finish.

 

 

nevermind,,,

Edited September 13, 2017 by CEMENTHEAD
forgot to turn the page

[Goldorak]

It's a spot weld machined flush  with the surface 

for the letter, it's the way to make the weld flush

M= machine

G=Grind 

C= chipping

H=hammering