Vacuum Hub bolts

Yes 12.9 is a higher spec than 8.8 and can take a higher torque. You also need to check if they are metric fine or course. If in doubt just visit a local engineering supplier and show them the offending item, they are usually very helpful and cheaper than eBay etc.

They are indeed "normal" M8 thread bolts, as "we" supply with spacer rings (to fit SJ hubs) etc...

I hate to disagree with Scimike, but from experience I'd go with 8.8s... 12.9s are more inclined to sheer... I once blew all 6 free wheel hub bolts on my old Vitara with twin LSDs, an SJ crawler box and a Centreforce (on/off!) clutch rescuing a Land Rover at Tom's Farm back in the day... I'd also reference the Diesel Brother's episode where they built the Diesel Helipcoter, they also found that 12.9s were more serceptible to sheer than 8.8s which are a bit more maluable than brittle...

No problem being disagreed with, just playing it safe and simply going by the torque figures quoted for 8.8 and 12.9, the latter being about 45NM which is closer to the Suzuki figure quoted by Ray. I personally don't understand why they are so tight.
Havefun
 

They don't just hold the hub on. They transmit all the drive from the axle to the wheel.. M8x1.25, 40mm length. I have replaced mine wth socket cap (allen key) bolts to do away with the obscure E10 bolt head.

Ah ok, that will be why I suppose. I need to take a closer look the next time I have them apart.
TaMike

Hi, If I understand right, you sell the bolts? I was going to replace both sets of not too expensive.

Ray