Question about nuts and bolts (2 Viewers)

[stazi]

didn't really know where else to ask, so:
What's bigger:
3/8-18
or
5/16 - 18
in terms of nuts.

 

[withoutaface]

3/8 .

 

[stazi]

oh and it was actually 3/8-16 and 5/16-18
answer still the same? what does each thing mean?

 

[withoutaface]

No difference, still the 3/8. The first number's the diameter of the nut in inches, and the second is threads per inch.

 

[stazi]

and with bolts:
5/6-18 X 2 1/2"
X 2 1/4"

So to tell the difference, I'd measure them from the very top to the very bottom? or just the ribbed part?

 

[withoutaface]

I honestly have no idea what the 2 1/2, 2 1/4" bits mean.:/

 

[Xayma]

That is the length of the thread I think.

M5x30 edit wait, 30mm is the major diameter.

Umm I still think it will be the thread length.

 

[esther]

That is the length of the thread I think.

M5x30 edit wait, 30mm is the major diameter.

Umm I still think it will be the thread length.

M5 is the diameter and 30 is the thread length