Product Description
Simpson CNW7/8 CNW 7/8 in. Coupler Nut with Witness Hole is a Simpson Strong-Tie engineered fastener designed to connect threaded rods to one another and to anchor bolts. These coupler nuts are designed to exceed the specified minimum tensile capacity of the corresponding bolts and threaded rod, making them a reliable choice for structural rod connections requiring verified, positive thread engagement.
Key Features
- Tighten the two rods until each all-thread rod is visible in the Witness hole
- Positive stop feature that helps ensure proper thread engagement into each end of the nut
- For non-hot-dip galvanized all-thread rod only
- Rod diameter: 7/8 in.
- Height (min.): 2 in.
Specifications
- MPN: CNW7/8
- Brand: Simpson Strong-Tie
- Bolt/Rod Diameter: 7/8 in.
- Height (min.): 2 in.
- Coating/Finish: Zinc Plated or Uncoated
- Country of Origin: ZZ
Options
- Available in standard strength and high strength depending on corresponding rod in use
- Couplers available with oversized threads on one end for installation on hot-dip galvanized bolts (See OST models for ordering)
- OST couplers are typically oversized on one end of the coupler nut only and will be marked with an "O" on oversized side
Frequently Asked Questions
- What is the purpose of the Witness hole on the CNW7/8 coupler nut?
- The Witness hole serves as a means to verify when rods are properly installed. You tighten the two rods until each all-thread rod is visible in the Witness hole, providing a simple visual confirmation of correct thread engagement.
- What does the positive stop feature do?
- The positive stop feature helps ensure even threading into each end of the nut, promoting proper thread engagement on both sides of the connection for a secure, balanced joint.
- Can the CNW7/8 be used with hot-dip galvanized all-thread rod?
- No. The CNW7/8 is designed for non-hot-dip galvanized all-thread rod only. For use with hot-dip galvanized bolts, refer to the OST model couplers, which feature oversized threads on one end specifically for that application.
- How does the tensile capacity of the CNW7/8 compare to the rods it connects?
- The CNW series coupler nuts are designed to exceed the specified minimum tensile capacity of the corresponding bolts and threaded rod, ensuring the connection point is not the weakest link in the assembly.
Note: Product dimensions and/or screw or bolt holes may differ from picture. Please see item description for specifications.
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