Product Description
Simpson CNW5/8-5/8-OST CNW 5/8 in. to 5/8 in. Oversized Thread Coupler Nut with Witness Hole by Simpson Strong-Tie is engineered to connect threaded rods to one another and to anchor bolts with reliable, verifiable engagement. This coupler nut is designed to exceed the specified minimum tensile capacity of the corresponding bolts and threaded rod, and features oversized threads on one end specifically for installation on hot-dip galvanized bolts. A built-in Witness hole provides a simple, positive means to confirm that rods are properly installed.
Key Features
- Tighten the two rods until each all-thread rod is visible in the Witness hole
- Oversized threads on one end for installation on hot-dip galvanized bolts
- OST couplers are oversized on one end of the coupler nut only and will be marked with an "O" on oversized side
- Positive stop helps ensure even threading into each end of the nut
- Designed to exceed the specified minimum tensile capacity of corresponding bolts and threaded rod
- Rod diameter: 5/8 in. to 5/8 in. with oversized thread
- Height (min.): 1-1/2 in.
Specifications
- Manufacturer: Simpson Strong-Tie
- MPN: CNW5/8-5/8-OST
- Bolt/Rod Diameter: 5/8 in.
- Height (min.): 1-1/2 in.
- Coating/Finish: Zinc Plated or Uncoated
- Thread Type: One side oversized for hot-dip galvanized bolts
- Country of Origin: United States
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 in the CNW5/8-5/8-OST coupler nut?
- The Witness hole is a built-in verification feature that allows installers to confirm proper rod installation. Tighten the two rods until each all-thread rod is visible in the Witness hole, providing a clear visual confirmation that the rods are fully and correctly engaged in the coupler nut.
- Why does this coupler nut have oversized threads on one end?
- The oversized threads on one end of the CNW5/8-5/8-OST are specifically designed to accommodate hot-dip galvanized bolts, which have a thicker coating that increases their effective diameter. This OST (Oversized Thread) design ensures a proper fit with galvanized hardware. The oversized side of the coupler nut is marked with an "O" for easy identification during installation.
- How does the positive stop feature work?
- The positive stop is an internal feature of the CNW coupler nut that helps ensure even threading into each end of the nut. It acts as a mechanical limit to promote balanced and consistent thread engagement from both sides, supporting reliable connections between threaded rods or anchor bolts.
- What is the rod diameter and minimum height of this coupler nut?
- The CNW5/8-5/8-OST is designed for a rod diameter of 5/8 in. on both ends, with one end featuring oversized threads. The minimum height of the coupler nut is 1-1/2 in. It is finished in Zinc Plated or Uncoated and is made in the United States.
Note: Product dimensions and/or screw or bolt holes may differ from picture. Please see item description for specifications.
Reviews
FAQs
Standard Shipping is free on orders over $50 within the contiguous US. If the order is under $50.00, the shipping is $9.99 set fee for shipping within the contiguous US.
Most of our products will ship within 1 to 3 Business Days. Some Special order products will ship within 2 to 5 Business Days. Preorders will be shipped to you on a first come first serve basis as soon as available from the manufacturer. Items that are "Made-to-Order" (Custom order products) will be shipped when fabrication is completed, shipping and delivery times will vary and depend on manufacturing.
Products that are shipped directly from the manufacturer will have processing and fulfilment times subject to manufacturer availability.
Preorders are shipped on a first come first serve basis as soon as available from the manufacturer, the sooner you place your Preorder the sooner your order will ship.
Freight shipping Policy:
Orders/Items too large or heavy may require special handling/Shipping and may require to be sent by truck. Someone must be present to accept truck deliveries. Standard truck delivery is to a dock facility designed to receive freight. You will be notified within 24 hours of ordering to confirm delivery. Lift gates for deliveries are available for an additional fee.
We offer Financing options through Clicklease
Please email your Return request to info@FactoryDirectSupplyOnline.com
Include the order number and the reason for your return.
All returns, regardless of their categorization, must include all original parts, be in their original packaging, and in the condition in which they were received. You may not qualify to receive a refund If the returned item is used, damaged, missing any parts, or is damaged during return shipping.
Checkout our complete Return policy
You can contact us through our contact page! We will be happy to assist you.