Why do so many oddball screw sizes exist?
5/8", 7/16"
and who even knows what exists in metric
The way I see it, you shouldn't be allowed to use a number greater than 3 in the numerator. Want to use 5/16"? Sorry, you're only allowed to use 1/4" or 3/8"
This would save everyone a lot of headache and no one would even notice the difference.
Just use metric. The bigger the number the bigger the screw.
The point isn't about getting confused but the proliferation of diameters.
Going from e.g 2/8" (1/4") -> 3/8" = 50% bigger diameter
going from 3/8" -> 4/8" (1/2") = 33% bigger diameter
and from 4/8 -> 5/8" = 25% bigger diameter.
When you design a thing, are you ever going to need a fastener, of any kind that is only 25% bigger (or smaller) than the next size? Would 33% not suffice?
I'm just saying that manufacturers that make oddball sizes should be publicly shamed. That's all.
Well you need different lengths for different material, but diameter/size? I'm with you.
There's some call for it in industry so if Joe at station A drops a box of 3/4"x2" grade A bolts for transmission mounting he doesn't grab a box or 3/4x4" grade F bolts from the gut mounting doors.
Now he's got 3/4 hex sockets and the guy immediately next to him on the line has hex bolts, and next to him is torn and next to him is 1/2 bolts instead of 3/4 etc... dumb shit sizes give more space on the line
You know some butthole engineer calls for different size fasteners not caring how awkward it makes everything
at my job, we have simple metric for everything, which is extremely common in my experience. metric doesn't have "weird sizes" except for M2.5... we only have M2.5 M3 M4 M5 M6 M8 M10 M12 M16 M20
that's it.
M sizes mean the thickness in mm if you ignore the threads. those numbers also refer to the allan keys used for those bolts.
that's all we have for thicknesses.
length goes in increments of 5mm, which gives out stock a few funny bolts, like the M12x5, which is a 13mm wide bolt only 5 mm long,
>M12x5
yikes that is completely pointless
diameter x 1.5 is the thread length you want engaged
>funny bolts, like the M12x5
This is a very niche bolt if it even exists. Generally speaking the largest bolt that's 5mm long is the M5x5. Then the shortest bolts of the next size will be M6x6, M8x8, M10x10, M12x12,...
Honey, none of this is correct
>metric doesn't have "weird sizes"
My basic set of metric hex keys has a 3.5, 4.5, and 5.5...
>those numbers also refer to the allan keys used for those bolts
Try fitting a 5mm hex key in an M5 socket head bolt and get back to us
>length goes in increments of 5mm
10-12-16-20-25... yep, looks like increments of 5 to me
metric has some weird sizes to but you rarely need them outside of cars and engines
>m7
dunno what it was, something in an mb or bmw engine?
>m14
not shure of its standard use but they where perfect for replacing rusty imperial bolts on my jeep
and thread pitches we mostly just use the coarse aka standard pitch, with the occational fine pitch
>enter the even finer pitch...
and the m number inducates the outside diameter so it includes the threads, an m12 bolt slips through a hole drilled with a 12mm drill, there is nothing 13mm on it.
holy shit you're a fricking moron
Some things require imperfect fastening.
This is the very small price of freedom, my friend
Go find something useful to fill your time with instead of posting useless shit like this
Moron!
I know "ad hominem" attack, but then you're too dumb to understand a logical argument.