Identify this screw.... please.

Hi all,

I need to know what these types of screws are:


I bought these from Screwfix a few years back and now I cannot find them. I am sure they are 4mm x 40mm and are external screws. I have been on the Screwfix site for ages and I cannot find them.

i seem to remember them being turbo screws... but I could also be making that up.

BT Bob

Distinguished Member
It looks like a decking screw - although they often have no thread at the top near the head.


Wickes have them

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