# 11 RW — Hypodermic needle gauge dimensions (OD, ID, wall thickness, dead volume)

For 11 RW, nominal o.d. (mm) is 3.05; nominal i.d. (mm) is 2.39; wall thickness (mm) is .330, verified against its source on 2026-08-27.

- **Gauge number:** 11 RW _(verified: appears in the quote below)_
- **Nominal O.D. (mm):** 3.05 _(verified: appears in the quote below)_
- **Nominal I.D. (mm):** 2.39 _(verified: appears in the quote below)_
- **Wall thickness (mm):** .330 _(verified: appears in the quote below)_

## What the source says

> 11     RW   3.05   3.02/3.07   .330   2.39     2.34/2.44

## Source

- https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf

Last verified: 2026-08-27. Review by: 2029-08-26.
Part of [Hypodermic needle gauge dimensions (OD, ID, wall thickness, dead volume)](https://referencesource.org/syringe-needle-gauge-dimensions/).