Coolant pipe bleed screw

[m7ck]

Vectra c 1.9 150
Coolant pipe plastic bleed screw can anyone confirm size please ? M10 or M12 and length
Thanks

[autov]

M10 x1.5 pitch not sure on actual length would have to go and find one in the workshop ,but it's about 12mm .I've replaced all 3 of our vectra's with stainless socket head cap screws and 'o' rings and dowty washers.

[m7ck]

Thankyou very much kind sir all the best