7 RW

What is the nominal o.d. (mm) for 7 RW?

For 7 RW, nominal o.d. (mm) is 4.57; nominal i.d. (mm) is 3.81; wall thickness (mm) is .381, verified against its source on 2026-08-27.

7 RW 4.57 4.57/4.60 .381 3.81 3.73/3.89

— nesmalltube.com, retrieved 2026-08-27