Common Dimensions reference thread

[Blindasabat]

I matched an E body to an A2 body threads. I am 90% sure the original A2 is 7/8ths-20.

 

[AndyF]

Thanks. I thought E head threads are 13/16-20 though.

I'm able to thread the A2 head onto the male threads on a U2 head.

Surefire was closed today, I'll post any info if I find out.

 

[Blindasabat]

The E is 13/16-20. I was not clear, I meant that I meshed the threads only to see if the pitch was the same (using the known 20tpi of the E as a thread gauge), which it appears to be. But I measured the diameter of the original A2 body threads at the head end at 7/8. So 7/8-20.

 

[Blindasabat]

I will have to see if my U2 head will thread on my A2 body.

 

[Blindasabat]

Just tried it. The original A2 and U2 BODIES thread together! Weird but true since the U2 body is internally threaded.

 

[AndyF]

So it turns out to be the same as C tail threads, 7/8"-20.

 

[Blindasabat]

So I can attach a U2 body to a C body to make a what, a 5xCR123?