The length can vary just as with SAE
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.
An SAE Grade 8 bolt will have 6 radial lines on it as shown below. \ | / / | \
bottom surface of the head to the end of the threads
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.
They are threaded the same way as SAE bolts; both have applications that have reverse or "left-handed" threads.
Sae Sae Norris is 5' 5".
I believe the pattern is recognized as 4-114.3 (4-4.5 sae) with a 4-bolt pattern.
If it is a 5-lug, it is 5 x 114.3 metric sizing, which is 5 x 4.5 in. SAE
SAE sets standard sizes and grades for bolts.Size and Grade are different:Size is set By the SAE (society of Automotive engineer's) and is stated as thickness followed by thread pitch followed by length 1/4 x 24 (threads per inch) x 1 1/14 (inches long) Grade Is a statement of strength and hardness. Most auto hardware tends to be grade 5 and some high strength stuff is grade 8 or grade 12
SAE 40 has a higher viscosity.
SAE 40 has a higher viscosity.