40mm Press-Fit Lock Nut for Water Inlet – Toilet Tank / Faucet / Hose Connector

This is a 40 mm outer diameter plastic lock nut, designed to secure water inlet connections such as toilet tanks, faucet shanks, or flexible hoses.

Unlike standard lock nuts, this model has no internal threading — it relies on internal ridges for a secure press-fit hold, making it ideal for:

Emergency plumbing repairs;

Replacing worn-out nuts;

Low-pressure water systems.

Perfect for cases where the original part is missing or stripped.

💡 Recommended materials: PLA, PETG, or ABS.
📏 External dimensions: 40 mm x 6.4 mm.
🔧 Easy to install, no tools required.