996 - Loose door shut stay bolt

[Chris944]

Hello collective 996 knowledge-wizards,
I have a loose door stay bolt on the driver's side of a 996 C4 car, where the door stay is fastened to the front wing bulkhead. Picture 1 shows this, with the bulkhead stay fastening circled in black:-



The bolt head has an inset hole to receive some device with which to turn it. Picture 2 shows this:-



Does anyone know what tool I need to get/borrow to tighten this bolt please?

Cheers.

[Chris944]

I just love Pistonheads!! Thank you one and all.

[Chris944]

6mm Allen key -will try it. Cheers.

[Chris944]

Hurray! The no. 6 Allen key did the tightening job perfectly. Cheers.