8 RW

What is the nominal o.d. (mm) for 8 RW?

For 8 RW, nominal o.d. (mm) is 4.19; nominal i.d. (mm) is 3.43; wall thickness (mm) is .381, verified against its source on 2026-08-27.

8 RW 4.19 4.17/4.22 .381 3.43 3.35/3.51

— nesmalltube.com, retrieved 2026-08-27