Purpose of Screw on this Cast Iron Radiator?

MrCofDG

Hi folks,
Yesterday I noticed a screw on the side of a cast iron rad in the house - I've never used this screw (the bleed valve is at the other end, which I have used). I haven't tried turning this 'new' screw yet, fearing a hard-to-fix leak. Any idea/opinion as to the purpose of this screw ? Pictures attached. 1st pic is looking at the head of the screw -
2nd pic is looking from above (radiator in question is on the left) -

Jamie Hall

Odds are it was just another place for a bleeder... I'd leave it be.

AMservices

I think that screw is for the end cap piece that hides the piping.

JohnNY

Yes. It holds the end cap in place. The original was probably a thumb screw.

MrCofDG

Now I noticed the same sort of screw on sides of radiators at another inside corner in another room. It does look like it could be used for securing an end cap, or for a bleeder valve at installation time. I'm gonna leave 'em alone. Thank you gentlemen.

ratio

A one-post necro

a lack of added content

spam is yet to come

pecmsg

ratio said:

A one-post necro

a lack of added content

spam is yet to come

https://m.youtube.com/watch?v=mBcY3W5WgNU

Erin Holohan Haskell

Got it. Thanks!