5/16-18 Steel Coupling Nut (Zinc-Plated)

Join threaded rods end-to-end with this Boltmaster coupling nut. Made of durable zinc-plated steel with national coarse, right-hand 5/16-18 threads, it provides strong, reliable connections for plumbing, electrical, and general construction applications.

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Key Features:

• Durable Construction: Zinc-plated steel resists corrosion for long-lasting performance
• Reliable Threading: 5/16-18 national coarse, right-hand threads for secure rod coupling
• Professional Use: Ideal for plumbers, electricians, and contractors joining threaded rods
• Easy Alignment: Hex body allows wrench grip for straightforward installation
• Single-Pack Convenience: Comes carded as a 1-pack for quick repairs or small projects

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Specifications Table:

Specification	Details
Brand Name	Boltmaster
Material	Steel
Finish	Zinc Plated
Inside Diameter	5/16 inch
Thread Type	Coarse, right-hand
Call Out Size	5/16 - 18 inch
Length	1.75 inch
Number in Package	1 pack
Packaging Type	Carded

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Frequently Asked Questions (FAQ):

Q: What rod size does this coupling nut fit?
A: It fits 5/16 inch diameter threaded rods with 18 TPI (coarse, right-hand threads).

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Q: Is the nut corrosion resistant?
A: Yes, it is zinc plated to help resist rust and corrosion in typical indoor environments.

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Q: Can I tighten it with standard tools?
A: Yes, the hex body is designed for use with common wrenches for easy installation.

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Q: What is the length of the coupling nut?
A: The coupling nut length is approximately 1.75 inches.

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Q: Is this suitable for structural loads?
A: Use per project specifications; while durable, always verify load requirements and local codes before structural applications.

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A Sleek, Functional Connector for Clean, Continuous Lines

This zinc-plated coupling nut brings a streamlined precision to exposed hardware moments, seamlessly extending threaded rods for a polished, uninterrupted silhouette. The hex profile adds a crisp architectural detail while keeping installation effortless. Style it in open industrial shelving or custom fixtures where hardware becomes part of the aesthetic. It’s a subtle essential that elevates utility into refined, modern craft—quiet luxury in the details.

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Complete your rod connection with this durable, zinc-plated coupling nut—add to cart for a secure, professional finish.