Disco 1 Help identifying bolt in steering assembly

can anyone give me a part number or specs for the bolts in the bracket that bolts through the front of the chassis, and supports the steering box?
In this case it's the lower bolt which is stuck and I'd like to get it out so I can fit my steering guard, but as it seems to be rusted in I'm thinking I'll need to cut and weld it before it will move - when I put a 4ft breaker bar on it the bolt head was starting to shear off!

Cheers chaps...

I would just measure it and get a generic bolt as a replacement.

253952 1/2 x 6 1/2 or m12 x 165mm, though bolts tend to be none std shank length

jamesmartin said:

253952 1/2 x 6 1/2 or m12 x 165mm, though bolts tend to be none std shank length

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Thanks James! it's very good to have you back here.

And thanks other James also - I've got some M12 stud that was my cut to length fall back plan, but it's always nicer to see the correct bolts on steering assemblies!