12 RW
What is the nominal o.d. (mm) for 12 RW?
For 12 RW, nominal o.d. (mm) is 2.77; nominal i.d. (mm) is 2.16; wall thickness (mm) is .305, verified against its source on 2026-08-27.
12 RW 2.77 2.74/2.79 .305 2.16 2.11/2.21
— nesmalltube.com, retrieved 2026-08-27
- Gauge number
- 12 RW verified
- Nominal O.D. (mm)
- 2.77 verified
- Nominal I.D. (mm)
- 2.16 verified
- Wall thickness (mm)
- .305 verified
Source
- nesmalltube.comhttps://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf