Security bolts - what type of tool required?

Security fixings.

Is the small hole recessed, they are similar to pig nose fixings.

 

Is it a hole or a ball bearing that's protruding? Pig nose are two hole, did a search and can't find anything that looks like these.

 

I said similar to pig nose, but forgot to 'add but only only single hole, not usual two holes', interupted by phone, timed out, & I then forgot.

And lack of info by OP...

 

No problem KIAB, I knew what you meant and wasn't trying to correct you...more to reinforce what you said

Now about those hinges...

 

I don't know. I'm guessing that's an eccentric (I mean eccentric as in "off axis" not "smokes a pipe") hole.

Something like this patented thing?

 

Never seen a fixing like it.

 

No, me neither.

There seem to be a number of patents for screwdrivers and the like for them (assuming our interpretation of the image is correct and it is a hole).

I'd be interested to know how you get them out.

Make your own key, or drill the head off them work out how to remove the stud later?


Link to full size image

 

...or is that a raised dimple?

 

OP = Original Poster.

KIAB. Must have forgot who started the thread.

 

Is there no makers plate on skylight, you could then contact & they might be able to help.

 

Burger me DA, you've been on here long enough to now what OP means

 

Ask kools how to remove those fixings ...... I'm sure he will have an idea that'll work

 

And what product would you suggest to fix it back on?

 

Lord knows ........ opps better not use that phrase, may lead to another 2000 posts

 

If that hole is eccentric, it's not by much! Hope they're not too tight

Mr. HandyAndy - Really

 

A hammer will fit