Does anyone know what size these are (4x4 diff)?

Are they M10 x 1.5?

Also, where can I buy suitable high tensile bolts for propshaft application?

Ta

 

This place is usually pretty good mate, they don't have that size your specifing though only M10x 1.0mm or M10 x 1.25mm

I would assume for the prop you would need Grade 10,9 rather than 8,8 but they may have the size ??.

Not many places seem to be able to supply 10,9 either....

http://www.namrick.co.uk/browse.asp?PCID=9

 

I don't know the size but can get all the bolts.
You do NOT want high tensile here, as you need some ductility in the bolt.
Get me the size and I'll tell you the bolt cost, which is only going to be around 15-30 p each
tabetha

 

Do you class 10,9 as high tensile? Thats whats ford use on the diff to prop flange (although I believe its UNF thread though)

Ive got some 10,9's coming now. Thanks for the offer though tabetha much appreciated.

 

10.9 is not the strongest, but if that is what it had they are obviously ok, the stronger the bolt the more brittle they become losing their ductility.
SS for example would be unsuitable for this location as it is brittle.
tabetha