What is the name of this wood screw with a washer?

[JohnBishop]

Hi All,

I am going to DYI some ledges for pets and I don't know what is the name of these screws?

You drill a sufficient hole, screw it in then you have this washer and a fastener.

 

 

Thanks

Edited March 30, 2023 by JohnBishop

[Onoff]

Do yourself in?

[Onoff]

Called hanger bolts, wood to metal dowels etc. 

 

Then you'll want a penny washer and wing nut of the appropriate size

[Russell griffiths]

3 hours ago, Onoff said:

Do yourself in?

Think about it all the time. 

[Dave Jones]

standard m10 coach bolt / threaded rod. penny washer and m10 wingnut.

 

its not a screw.

[Alan Ambrose]

If the other end is a standard wood screw thread - double-ended screw / hanger bolt / dowel screw / twin thread screw.