Name this screw!

[Windymiller]

Any suggestions? It's from the rear of a Porsche 997 air con unit.

[virgil]

Looks like a BZP socket head flange button screw. About 4 or 5 mm I guess...sorry, can't tell the length

[one eyed mick]

Hans or Adolphus ?

[gsd2000]

looked like a rounded torx to me

[littleredrooster]

Button-head allen screw with integral washer. Also seen them called trim screws, but that's a bit vague.
All IMO, of course.

[dmitsi]

Looks like a rounded off 25 torx that someone has attacked with a allen key.

[HustleRussell]

gsd2000 said:

looked like a rounded torx to me

This. Have fun with that!

[dmitsi]

HustleRussell said:

gsd2000 said:

looked like a rounded torx to me

This. Have fun with that!

My solution to this is to round it off a bit more with the allen key again. Swear at anything in the vicinity. Try a bigger allen key that won't fit in. Then end up getting a T30 and hammering it into the already mangled fitting. It will go in but requires a hard hit (which could be a problem on this plastic fitting). Once stuck in place you can remove the screw and recover the torx bit via the use of a vice and previously mentioned hammer.

[HustleRussell]

on this one I think I'd slot the head with a dremel cutting disc and use a flat-head screwdriver.