*RUNWELL* marine nut 316

RUNWELL, a Japanese handmade tool brand from Tsubame-Sanjo the Japan's manufacturing hub of metalware.

These hub nuts are CNC-machined from solid SUS316L stainless steel, a premium marine-grade material renowned for its exceptional durability.

SUS316L is designed to withstand harsh marine environments, including constant exposure to seawater and moisture aboard ships.

Naturally resistant to rust, it also offers excellent strength and corrosion resistance, helping reduce the risk of seizing or damage over time.

The nut features a wide tapered shoulder for smooth, easy wrench engagement.

Its thoughtful design also addresses a common issue with certain frame designs, where recessed fork ends or small protruding tabs can make fitting hub nuts difficult—or even impossible.

Combining ultimate durability with thoughtful design, these hub nuts are a truly exceptional piece of hardware.