SKU: 89635455851

Simpson Strong-Tie SSW21-2KT Strong-Wall Steel Two-Story Stacked-Wall Connection Kit for High Load Multi-Story Applications

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Description

Simpson Strong-Tie SSW21-2KT Strong-Wall Steel Two-Story Stacked-Wall Connection Kit for High Load Multi-Story ApplicationsSimpson Strong Tie SSW21 2KT Description The Steel Strong Wall Two Story Stacked Wall Connection Kit is designed for high load multi story applications, providing reliable structural support and ease of installation. Simpson Strong Tie SSW21 2KT Includes (1) Shear Transfer Plate with #14 Self Drilling Screws (2) 1" x 48" Threaded Rods F1554 Grade 36 (6) Heavy Hex Nuts Installation Instructions Simpson Strong Tie SSW21 2KT Features Some of the highest

Simpson Strong-Tie SSW21-2KT Description

The Steel Strong-Wall Two-Story Stacked-Wall Connection Kit is designed for high load multi-story applications, providing reliable structural support and ease of installation.

Simpson Strong-Tie SSW21-2KT Includes

  • (1) Shear-Transfer Plate with #14 Self-Drilling Screws
  • (2) 1" x 48" Threaded Rods F1554 Grade 36
  • (6) Heavy Hex Nuts
  • Installation Instructions

Simpson Strong-Tie SSW21-2KT Features

  • Some of the highest loads in the industry, and design procedures that account for cumulative overturning
  • No bearing plates to install; walls can be placed flush against a corner
  • Compression loads transferred by nut and rod, reducing wood crushing under load

Simpson Strong-Tie SSW21-2KT Applications

  • Two-Story Stacked on Concrete Foundation

Simpson Strong-Tie SSW21-2KT Installation Overview

  1. Drill or notch subfloor to allow compression nuts to sit flush with underside of Steel Strong-Wall (SSW)
  2. Drill holes in first-story top plates to allow threaded rod to pass through
  3. Install threaded rods and nuts in lower Steel Strong-Wall
  4. Extend threaded rod through lower wall and floor system into upper wall
  5. Install solid blocking under center and each end of SSW per designer
  6. Place SSW over threaded rod and secure with anchor nuts included in SSW kit
  7. Attach shear transfer plate to upper SSW with supplied #14 self-drilling screws, and to rim joist with 0.148" x 3" nails
  8. Complete assembly with A34 angles (sold separately) per designer
  9. Attach SSW to top plates or header with Strong-Drive SDS screws (supplied)

Simpson Strong-Tie SSW21-2KT Specifications

Application Two-Story Stacked on Concrete Foundation
API Approval Approved - Full
Wall Width (in.) 21

NOTE: Two heavy hex nuts included with each wall.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 89635455851

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Gold Coast
Cuba, US
★★★★★ 5
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Style: Ball, Size: Medium (Pack of 2)
Great new ball for our pup. He loves the sound of the crunch!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
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Cheryl
Carnegie, US
★★★★★ 5
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Style: Ball, Size: Medium (Pack of 2)
My dog loves these balls!
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Reviewed in the United States on May 25, 2026
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ShainaKatt
Charlottesville, US
★★★★★ 5
Dogs love them
Style: Ball, Size: Medium (Pack of 2)
Our dogs love these. What’s great is that you can add more plastic (like from water bottles) if the plastic starts to fall out from the center. If you have a chewer, though, these won’t last you long. Our shepherd mix loves these and then starts to pull the rubber apart the more she plays with it. Our other dogs treat it normally, though, and those ones last forever. They also get some decent height when bounced, and they make a unique whistling noise when thrown.
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Reviewed in the United States on November 17, 2025
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waragon
Natrona Heights, US
★★★★★ 4
Our pup loves the cronch cronch!
Style: Ball, Size: Medium (Pack of 1)
I bought our 15 month old Coton several Chuck-It toys on an Amazon deal. He is incredibly playful, mischievous, and ball/toy obsessed, especially for anything that makes noise. He can also be very destructive so I love how durable most of their products are - they’re among our longest lasting toys and worth every penny. We have yet to take them to the dog park, but they’re a perfect size for sharing in play time. And they are keeping him busy at home - that’s a good thing. He loves investigating the crunchy-cronchy-crinkly sound which is a nice change from squeakers. It can withstand his destructive chewing well-being, gentle on his little teeth. I love that. Chuck-It is thinking outside the box with a variety of balls to keep dogs engaged! I do worry about the crinkle plastic inside because it is accessible because of the air holes and it feels a little sharp. So this will have to be an at home toy so we can monitor his play.
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Reviewed in the United States on May 28, 2026
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Mystical Lady
Port Orchard, US
★★★★★ 5
Great products all around
Style: Ball, Size: Medium (Pack of 2)
Any of these balls are great! My dogs love all of them. The squeaky ones are their favorite!
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Reviewed in the United States on March 12, 2026

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