Nuts and bolts. SAE, Metric, or both
I been wrenching on vehicles all my life. It use to be only SAE, then it became a mix of SAE and Metric. I thought they we're going to phase out SAE and go all metric at some point, but it seems like ...
Forum Discussion
fj12ryder wrote:
"I don't know what you are wrenching on, but when I retired from Engineering from one of the Detroit 3 auto companies almost 12 years ago I know there had not been one single SAE fastener on any of their vehicles in over 15 years."
Maybe we're thinking of different Detroit 3 auto companies. Almost all the nuts/bolts on my 2001 Dodge pickup are SAE, but there are a few metric, just enough to drive a person to frustration. The 2001 Ford Escort I had was about the same way. Most engine parts were metric, but quite a few body nuts/bolts were SAE. So you must have worked for Chevrolet. I haven't owned one of those since I bought that horrible POS 1986 Chevy Cavalier. I still have nightmares over it.
x2 I can point out at least one example from each of the big three that had SAE fasteners on them in 2004 or later. What I observed is that new design parts are metric. but parts that have carried over especially some of the assemblies were SAE fasteners.
so far my 2015.5 duramax seems to be all metric. at least I haven't found any SAE fasteners. But it wouldn't suprise me if there are still a few hanging on.
and going back to the 80s and 90's it was more like 50/50 on at least ford and GM.
