Raleigh frame lug

[Windhover]

I have come across this lug on a number of Raleigh, Triumph and Claud Butler bike frames and I don't know what it is for. It is located on the right hand rear stay just behind the bottom bracket (see photo). The hole goes into the centre of the rear stay but it is not threaded.
Can anyone enlighten me what it is for??

 

[Sharky]

Guessing, it could be for attaching a full metal chain guard?

 

[MichaelW2]

Apparently so

https://www.bikeforums.net/classic-...in-hood-what-braze-hole-right-chain-stay.html

 

[Windhover]

Yes you are right. I'd forgotten this part of the chainguard fixing. I guess I was thrown by it not being tapped to receive the chainguard mounting bolt. Thanks for your help.