Nut size

[72cut]

Ok losing it. Trying to put radiator isolators on new radiator. Drivers side took m5 nut. However the m5 seems to? be too small on passenger side but m6 is too large. Is there a size in between? Am I missing something

[watchamakalit]

There is such a thing called 5.5mm. I have a snap on socket from back in the day. You have to have one for old gm stuff.

[ghetdjc320]

I also have a 5.5mm socket but what size are the actual threads? 

[A-man930]

[72cut]

I'll look for 5.5. I have a paper gauge, seems like it would be a 5 but isn't