Originally Posted By: engineer20
i can post a picture later, but I took a picture of cotter pins or metric cotter pins in the "metric" section of ace hardware, so I don't know why you guys are so uptight about it, does it matter, and out of complete seriousness, you probably should use metric, but you said domestics use SAE but I can't tell if that's serious or if you're just joking. Don't modern domestics use metric too, as many of the nuts/bolts are metric on domestics, rather than sae? or for ford at least.
Wrong cotter pin.
An automotive grade "SAE" cotter pin that fit is safer than a garage door grade "metric" cotter pin (or the other way around, whatever). I don't know all the details but if the heat treatment or material is not right it will shatter at the wrong time.
Note: if you haven't notice by now all cotter pins will wiggle a little inside where it should go. A metric / SAE pin will wiggle more or less, so that's why it is no big deal between the slight size difference in 0.04mm (or 1 mil if you want to use English unit) they have, because they still wiggle.
i can post a picture later, but I took a picture of cotter pins or metric cotter pins in the "metric" section of ace hardware, so I don't know why you guys are so uptight about it, does it matter, and out of complete seriousness, you probably should use metric, but you said domestics use SAE but I can't tell if that's serious or if you're just joking. Don't modern domestics use metric too, as many of the nuts/bolts are metric on domestics, rather than sae? or for ford at least.
Wrong cotter pin.
An automotive grade "SAE" cotter pin that fit is safer than a garage door grade "metric" cotter pin (or the other way around, whatever). I don't know all the details but if the heat treatment or material is not right it will shatter at the wrong time.
Note: if you haven't notice by now all cotter pins will wiggle a little inside where it should go. A metric / SAE pin will wiggle more or less, so that's why it is no big deal between the slight size difference in 0.04mm (or 1 mil if you want to use English unit) they have, because they still wiggle.
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