Steel coupling nut for joining two pieces of 7/16"-14 UNC threaded rod end-to-end, or extending an existing bolt with another of matching thread. Zinc plating provides general-purpose corrosion resistance for indoor and protected-outdoor installations.

• Thread: 7/16"-14 UNC (14 threads per inch, coarse)
• Length: 1-3/4" (standard coupling length)
• Across flats: 5/8" hex (uses standard 5/8" wrench or socket)
• Material: low-carbon steel, zinc plated
• Hillman/Steelworks MPN 11846
• Sold individually (1 each)

Tip: Engage both rods at least half the coupler's length for full strength; thread the rod in until it just contacts the center witness mark or until equal thread shows on both ends.