Generic GI 1/2 Inch Galvanized Iron Back Nut, BSP Thread

GI Back Nut 1/2 Inch

The GI 1/2 Back Nut serves as a fundamental locking component in professional plumbing and mechanical fluid systems. This fitting provides a secure mechanical stop on threaded galvanized pipes, ensuring that connections remain fixed even under vibration or thermal expansion. It is manufactured from malleable iron and treated with a protective zinc coating to meet standard site requirements for durability.

Built for the Job

This hardware item is essential for contractors working on water storage systems and industrial pipe networks. It allows for the secure fastening of pipes through tank walls or bulkheads where a standard threaded joint requires an external locking point. The robust construction handles the high torque levels required by pipe wrenches during heavy-duty installation without stripping the internal threads.

• Securing pipework through water tank walls and cisterns to prevent movement and leaks.

• Locking threaded fittings in place on long-screw connectors in industrial fluid lines.

• Providing a secondary mechanical lock for brass or iron valves in high-vibration areas.

Product Highlights

Corrosion Resistance

The hot-dip galvanized finish creates a metallurgical bond that protects the iron substrate from oxidation in damp or outdoor environments.

Precision Threading

• Standard 1/2-inch BSP thread pitch for universal compatibility
• Clean lead-in threads to prevent cross-threading during rapid assembly

Technical Specifications

What’s Included

• 1 x 1/2 Inch Galvanized Iron Back Nut

On-Site & Workshop Notes

• Always apply PTFE thread seal tape or a suitable pipe compound to the mating threads to ensure a watertight seal in pressurized systems.

• Use a correctly sized adjustable spanner or pipe wrench to avoid rounding the hexagonal edges of the component during high-torque applications.

• This iron fitting is suitable for cold and hot water systems but should be checked for compatibility when used with specific chemical transport lines.

• Store in a dry area to maintain the integrity of the zinc coating before the installation process begins on the job site.