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What screw is this?
I know it’s 70mm, it’s made by Würth, and I think it’s zinc plated. But I can’t find it in the catalogue.
Due to the f$@kwittery of a fire screen supplier I have 2500 of them that I don’t need, can’t return and will sell them on, but the boxes aren’t labeled…
Button head, counter sunk screw.
Button head, hex socket, not fully counter sunk, some sort of wood screw.
Yeah, it’s definitely not fully countersunk.
It's not a button head and I would disagree about it being countersunk aswell.
It's designed to bury itself below the surface of the wood completely. Like a decking screw.
Single thread.
Not countersunk. But, what joshvegas said, will Bury the head.
Maybe intended for sticking panels of osb to studding?
Looks like it could be a concrete/masonary screw. Never seen a wood screw with Allen head before, usually pozi/torx
It’s not quite hex head but AW, like a tapered torx.
Pan head
Single course thread
Hex driver
Shoulder design appears to be job specific due to chamfer and not splined , Ie. for self counter sinking
How much for 2,500 posted to Southampton?
Pan head
Single course thread
Hex driver
Shoulder design appears to be job specific due to chamfer and not splined , Ie. for self counter sinking
It's not a pan head or it wouldn't have the cone.
It's not a hex drive... Because reeksy says it's AW.
I will allow the other two points though.
I think that type of screw is for fixing metal plate to wood as in tie plates for roof joists etc. The socket is probably RW type, not sure what the screw is called though.
How much for 2,500 posted to Southampton?
Thread closed
Okay.
I am a sad bastard I really am.
But I think it's....
A Worth Amo III 7.5 type 3 (12.5mm head)
https://www.wurth.se/ecom/globalassets/inriver/resources/55-1_c50b0598.pd f">Like this.
Whether it's correct or not I am definitely wrong about it burying in wood (it would do that but not what is for)
It’s not quite hex head but AW, like a tapered torx.
Würth have their own system, similar to Torx, but they won't work with torx heads, but torx heads work on Würth heads.
The assortment of screws from Würth is bewildering. Nor are they cheap. They are however all designed to conform to German DIN building standards/regulations.
A Worth Amo III 7.5 type 3 (12.5mm head)<br /><br />
This might be close… except I can’t get the internet to work to verify it.
I think it’s not actually a wood screw at all, but for fastening metal to metal.
FFS the link doesn't work.
It's a window to masonry screw hang on will try to fix it.
Why not ask the supplier?
The head looks quite different to any of them. It's domed.
See I thought that but two things.
It's hard to tell from reeksys pictures how domed it is.
Looking at the other heads in that spec sheet it looks to me like it's been brutally cropped. Infact the only photo worse than the one in the spec sheet is Reeksys In backgrounds with a blurred centipede in the foreground.
I haven't just taken a flyer at it I developed quite the search term... And applied the use case to my logic.
It might be something else though. They don't seem to be available on the UK site so may be discontinued and this is a replacement.
I am confident I am more righter than anyone else so far though.
I think you’ve nailed (or rather screwed) it.
It’s supposed to be fixing fire screens over windows, well it was six months ago. We changed our specifications but they still sent them and the supplier a royal pita to deal with.
Also, I try so hard with this bloody iPhone to take close up photos and it just always focuses on the wrong thing regardless of what I tell it!
I think it's a pan head metal finishing screw. The pan head and torks look pretty so I'd say it was designed to look nice. The length is long for metal although the thread seems fine for a wood screw.
Possibly for fixing sheet metal to a timber frame or something along those lines
Edit just seen your post, seems likely
Ask the supplier to confirm the details by sending you the relevant product spec as a .pdf, or giving you the Wurth part number.
Pretty certain it’s these buggers:
Presumably the angle under the head isn’t a countersink, it’s a taper for centring a metal sheet where the sheet’s hole is ever so slightly larger than the screw shank width. The head then hits the flat of the metal sheet holding it down (up/across delete as appropriate).
Edit - given the width of the shank, thread, taper and head I’m pretty certain - though admittedly often wrong.
Pretty certain it’s these buggers
The countersunk milling head isn't obvious in your photo if it those
Yeah deffo the type 3 not the type 1.
Jesus I need to step away from this.
Possibly the most exciting thread in a long time.
Aren’t they the sort of masonry screws window fitters use? If it was metal to metal they wouldn’t need to be that long would they?
Possibly the most exciting thread in a long time.
A single thread though, not twin tread...
Yeah deffo the type 3 not the type 1.
Jesus I need to step away from this.
Yep, you’re right. @joshvegas perhaps I could send you a couple as a memento?
