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Why would you use a 3/8 SAE bolt, over a M10 bolt?

submitted by usedoilanalysis to TellUpgoat 1.9 yearsMay 22, 2023 17:30:29 ago (+2/-0)     (TellUpgoat)

The only thing I can think of is that .47mm difference means the bolt weighs slightly less, but then the hole for the bolt is .47mm thicker and that extra structural material would make the part heavier. This could mean slightly more structural integrity at the joint, allowing you to take weight off from somewhere else, or move weight to a more advantageous position.


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[ - ] FreeinTX 3 points 1.9 yearsMay 22, 2023 17:32:32 ago (+3/-0)

Because they are cheaper and more readily available.

Duh

[ - ] drstrangegub 1 point 1.9 yearsMay 22, 2023 17:42:23 ago (+1/-0)

most manufacturers have phased out sae for automotive and machines so always keep track of your bolts.most bulk bolts are sae. i use almost exclusively grade 8 nc bolts for just about everything i build or fix. reverse threads, grade 5, fine thread, etc are far less common.

[ - ] TheOriginal1Icemonkey 0 points 1.9 yearsMay 22, 2023 20:09:43 ago (+0/-0)

I hate the metric shit. I can tell a SAE bolt or nut from across the room, same with the wrenches and sockets. So much time is wasted digging through metric nuts, bolts and tools.

[ - ] usedoilanalysis [op] 1 point 1.9 yearsMay 22, 2023 20:13:05 ago (+1/-0)

I have no problem with either. My cars use metric, my planes use SAE.

[ - ] Thyhorrorcosmic103 0 points 1.9 yearsMay 22, 2023 18:31:27 ago (+1/-1)

3/8-16 will thread into M10x1.5 but not the reverse. That's all I know.

[ - ] texasblood 0 points 1.9 yearsMay 22, 2023 18:04:45 ago (+1/-1)

Thread pitch and thread thickness make SAE a stronger fastner.
Metric is another western dilution move.
They have been eating america one decade at a time.

[ - ] usedoilanalysis [op] 1 point 1.9 yearsMay 22, 2023 19:04:39 ago (+1/-0)

JIS bolts are plenty good.

[ - ] usedoilanalysis [op] 0 points 1.9 yearsMay 22, 2023 20:15:30 ago (+0/-0)

The grade of material used is the most important strength factor, the clamp load is determined by the number of threads, the finer the threads the stronger the clamp load per unit length of fastener. This is why cylinder head bolts and studs are fine thread.