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

For 15 RW, nominal o.d. (mm) is 1.83; nominal i.d. (mm) is 1.37; wall thickness (mm) is .229, verified against its source on 2026-08-27.

- **Gauge number:** 15 RW _(verified: appears in the quote below)_
- **Nominal O.D. (mm):** 1.83 _(verified: appears in the quote below)_
- **Nominal I.D. (mm):** 1.37 _(verified: appears in the quote below)_
- **Wall thickness (mm):** .229 _(verified: appears in the quote below)_

## What the source says

> 15     RW   1.83   1.82/1.84   .229   1.37     1.33/1.41

## 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/).