CNW-HSCNW-MCW Coupler Nuts

Simpson Strong-Tie CNW, HSCNW & MCW Coupler Nuts

Simpson Strong-Tie CNW, HSCNW, and MCW coupler nuts are designed to connect threaded rods and anchor bolts in structural anchoring, rod extension, and continuous rod systems. Built for reliable load transfer, these coupler nuts help create secure threaded connections for residential, commercial, and industrial construction applications.

Available in standard-strength, medium-strength, and high-strength options, this product family gives builders and contractors the flexibility to match the coupler nut to the strength requirements of the threaded rod or anchor bolt being used.

Key Features

• Connects threaded rod to threaded rod or threaded rod to anchor bolts
• Witness hole allows visual confirmation of proper thread engagement
• Positive stop helps support consistent installation on straight couplers
• Available in standard, medium, and high-strength configurations
• Transition coupler options available for connecting different rod diameters
  
• Suitable for structural anchoring and continuous rod tiedown applications

Product Series Overview

CNW Coupler Nuts

CNW coupler nuts are standard-strength couplers commonly used with ASTM F1554 Grade 36 threaded rod and anchor bolt assemblies. These are a practical choice for general rod extension and anchoring applications.

HSCNW High-Strength Coupler Nuts

HSCNW coupler nuts are designed for high-strength structural applications where greater tensile capacity is required. They are commonly used with high-strength threaded rod systems, including ASTM A193 Grade B7 applications.

MCW Medium-Strength Coupler Nuts

MCW coupler nuts provide medium-strength performance for applications using ASTM F1554 Grade 55 threaded rod. They are well suited for continuous rod systems, anchoring assemblies, and structural tiedown connections.

Common Applications

• Threaded rod extensions
• Anchor bolt connections
• Continuous rod tiedown systems
• Shearwall overturning restraint systems
• Strong-Rod Anchor Tiedown System applications
• Concrete anchoring assemblies
• Wind and seismic load transfer connections

Installation Notes

During installation, threaded rods should be tightened until the rod ends are visible through the Witness hole. Visible thread inside the hole helps confirm proper installation and adequate thread engagement. For transition couplers, install the coupler onto the larger rod first before threading in the smaller rod.

Available Sizes & Configurations

Simpson Strong-Tie CNW, HSCNW, and MCW coupler nuts are available in a range of rod diameters and configurations, including straight couplers, transition couplers, zinc-plated options, uncoated options, and oversized-thread models for hot-dip galvanized rod applications.