What is the name of this type of screw!

[topmount]

Hello

Does anyone know what this type of screw is called? Machine screws (countersunk) do exist, but these have a much larger head. They hold down wear-resistant plywood on a trailer, so they need to be galvanized or stainless. M6

 

[Violina]

Mf6s

 

[Violina]

But then it is with an Allen head bolt

 

[nwin]

MFT? See e.g. link:
https://www.solidcomponents.com/?company=SCCMW32NC&office=1611&page=33022

 

[Violina]

MFT? See e.g. link:
[link]

Yes, didn't see that the taper is not straight
It's one of those

 

[Leif i Skåne]

I think it's called countersunk. The one you have is for a Phillips screwdriver, but today Torx is preferred.
In new production, TT (TapTite) self-tapping screws are used.

 

[Violina]

I believe it is called countersunk. The one you have is for a Phillips screwdriver, but today Torx is preferred.
For new productions, TT (TapTite) self-tapping screws are used.

No, that is a Torx..
TapTite often requires a drill in a slightly different dimension.. standard m6= 5mm drill, TapTite= 5.5mm

 

[topmount]

Thanks for all the answers. I removed these from a trailer from -91, and not surprisingly, some were stuck and needed to be drilled out. The trailer is a welded and galvanized trailer with sturdy beams. So there are already holes (some hidden and others open) with threads which I plan to clean with a tap. So now the question is whether it works with self-tapping or if I should go for machine-threaded. New holes might have been better, but unfortunately, the holes in the abrasion-resistant plywood are already drilled, so if I make any changes, I'll probably go up in size instead.

 

[JonasJN]

Did you find any suitable screws?

 

[Stefan.o]

Old thread but here's something similar:

https://www.rinab.nu/slaepvagn-a/Chassiedelar/FlakskruvVagnsbult/Flakskruv-M6x30-Torx.htm

Regards