Neither, JIS standards do not include a class 8.8 or 10.9, They are 4T-11T. You should be able to identify the class if the bolt head is marked. However, since this is a specialty fastener that may not do you any good. If I'm thinking what you're thinking the OEM number is a 90103-08003. The normal bolt code does not seem to apply here, and since it is discontinued I can not seem to find an image to help with ID. If you end up using a bolt with a higher yield strength than the OE, still use the OE torque spec, if you have it, as the pre load calculations apply to the bolted connection using the OE fastener.Does anyone know if the safety wire bolts are 8.8 or 10.9 or other?
I have some broken ones I need to replace.
As stated, the Toyota part number doesn't work like that. Grade, nominal diameter, and length can usually be determined by the last 5 digits but not in this case. There isn't any q0.9 grade in the JIS system. All you need to to is record the following.Mainly it’s because the part numbers are a nightmare.
If someone wants to chime in with the part number for a grade 10.9 m8x1.25 30mm (22mm thread/10mm blank shank) hex bolt with a drilled head I’m all ears.
Because it’s not just chat that has become politically correct. No one wants to admit that they didn’t use safety wire when they overhauled their drum brake front end in this cancel culture. I am almost ready to leave MUD because of this milqtoast mentality.Why is it, that disc brake frt ends don't use safety wire? Are the bolt sizes different, threads, strength?