5/16-18 X 7/8 X 7/16" Coupling Nuts | Steel Zinc Plated (200 / Pkg.)

Coupling Nuts – Hex steel coupling nuts with a zinc finish deliver reliable, corrosion-resistant joining for threaded bolts and rods. This model is sized 5/16-18 UNC, 7/8 inch long, and 7/16 inch across flats, making it ideal for machinery, automotive, and structural applications.

• Thread size: 5/16-18 UNC
• Length: 7/8 in
• Hex size (width across flats): 7/16 in
• Material: Steel
• Finish: Zinc plated for corrosion resistance
• Type: Coupling nut (double-ended hex)

Designed for high-strength connections, these coupling nuts securely join two threaded rods or bolts with standard 5/16 inch diameter. The zinc coating provides resistance to rust and wear, making them suitable for indoor use and protected outdoor environments.

Whether you’re assembling machinery, equipment, or structural projects, these hex coupling nuts offer dependable performance, easy handling, and a clean, corrosion-resistant finish.

Enhance your fastener kit with these durable, zinc-plated coupling nuts. Add to cart today!