I seem to be down a couple bolts going into the block- what size/grade are these bolts?

I have looked all over to get an idea, but nothing. I was totally guessing at maybe a grade 8 3/8 coarse thread about 2", but I could be wayyy off.

They are for my '02 SCrew 4x with the 4.6.

Anyone know?

 

Believe they are something close like that...

I think they are stamped ABC 9.8

maybe I am thinking of the trans bolts...?

Measure the depth with a wooden dowel to make sure that the length is good, get the right metric thread and a decent grade and you will be fine.

 

The answer is:

10x1.50x25mm stamped 10.9 or 109.

In case it ever comes up- this for the 4.6L W 97-03's at least.

 

To add a little something here, just about every fastener on a vehicle is metric. The automotive industry began adopting the metric system decades ago. I think the only SAE fasteners on these trucks are the differential cover bolts. And I'm not even sure about that.

When you see the head of a bolt stamped with numbers like 8.8 or 10.9, those are metric. 8.8 is the equivalent of the old grade 5 and 10.9 is similar to grade 8.