Numbers on the bolt head. ie: 10.8 is stronger than 8.8
A mark on the head of the bolt, either in raised or depressed lettering. It consists of two numbers separated by a decimal point.
If there are lines coming inward from the outside on the head then this is an SAE bolt, not metric. If there are three of these lines than it is a grade five bolt.
10.9 on a metric bolt indicates the hardness (or load, tensile strength, and hardness) of the bolt. This is almost as high as they get and is about the equivalent to a grade 8 SAE or USS bolt. 8.8 is also a common metric hardness.
It's TENSILE strength and on metric bolts it is indicated by a number.
Metric fluid bolt spec? Exactly what does that mean? You want the torque specifications of a certain bolt. What bolt, used to attach what are you referring to?
A term grade is the grade received for a designated period of time.
There metric, get a metric set.
A bolt.
you can identify the slight different between an imperial bolt and a metric bolt by looking how fine their thread pitch looks like or feels like
The bottom bolt is a 10mm x 1.5mm x 35mm metric flange bolt grade 8.8. This is on a 2002 Ford Excursion 7.3 4x4 Automatic. The top bolt could be the same, but I don't know as mine has fallen out. Hence the reason I came across this post.
They have to be a metric bolt, possibly a 17mm