Wild guess - M8 coarse thread...

...sorry but you'll have to check for yourself.

########

I can give you some better advice, however, an assortment of high tensile (not the soft cheap junk!) zinc coated steel nuts, bolts and washers is a great investment for any DIY mechanic - saves a lot of cocking about.

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!