How do I remove this screw with two holes in it?

[luiazazrambo]

Hi *,

Sorry if this was asked before, I do not know what to look for. How is this type of screw called when it has two holes in it? And most importantly how do I unscrew it without damaging it? Is there a tool for it? How is it called?

The screw in question is marked with red on the pic.

Best regards,

Lui

[Marc]

It's called a "pig nose" nut.

the typical kind of tool for these is like a screw driver blade with the middle ground out.

https://www.amazon.co.uk/dp/B00EJD1CCY/ref=psdc_1939295031_t1_B07H34XNRM

I have made my own for watch work by adapting an old pair of dividers from an old draftsmans drawing set. I have simply replaced the pointed pins with straight pins.

[watchweasol]

Hi       Well we learn something every day. Its a "pig nose nut" I have undone many of these like Marc with a home made tool, Mine was a screw driver ground and filed for the purpose .  As Marc mentioned use old dividers and they must be old the new ones have only a stud point not much metal to play with.

[vinn3]

   its a spanner screw,  be shure to know which direction to turn it.  vin

[oldhippy]

An old pair of tweezers ground down to fit the holes will do a good job.  

[vinn3]

45 minutes ago, oldhippy said:

An old pair of tweezers ground down to fit the holes will do a good job.  

     i use "snap ring plyers".     the type that can be set  to : expand or contract.   i could post a photo?  vin

[luiazazrambo]

Poundland screwdriver set, one bit modified for the purpose.