Anyone know the size of the bolt that connects the dipstick tube to the block?

[Goinpro]

Went out to check the fluid levels and noticed that the bolt was missing. I tried to search but couldn't find anything. Any help would be appreciated. Thanks.


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[86GT351]

Probably a 6MM but not 100% sure of the thread pitch. I know the head is 8MM

 

[crownaviation]

M6x1.0x18mm

The end is tapered on the oem fastener and the thread is only 16mm long to the taper. And yes it is a 8mm head