Product Description
The Simpson MTW45-8 Mass Timber Angled Washer from Simpson is purpose-built to strengthen angled screw connections in mass timber construction. Engineered for use with a wide variety of 10 gauge - 33 ksi connection plates and 8 mm-diameter Strong-Drive SDCF Timber-CF screws driven at a 45 deg. angle, this washer helps maximize the load capacity and stiffness of timber-to-plate connections. This listing includes a pack of 10 washers.
Key Features
- Recessed hole sized for the SDCF countersunk head - the screw seats flush and cleanly, producing a professional finish without protruding hardware.
- Built-in 45 deg. angle guide - ensures every screw is driven at the precise angle required for optimal structural performance, reducing installation error on the job site.
- High load capacity per connection - fewer screws are needed to meet connection strength requirements, saving material cost and installation time.
- Cast from ASTM A27, Grade 70 - 40 material - a proven casting specification that delivers the strength and dimensional consistency demanded by structural mass timber applications.
- Zinc Galvanized, G90 coating - provides a durable layer of corrosion resistance suited to the demanding environments where mass timber structures are built and used.
Why This Product
- Engineered for mass timber performance - angled screws driven at 45 deg. significantly increase both the strength and stiffness of mass timber connections, and this washer is specifically designed to make that drive angle accurate and repeatable every time.
- Seamless compatibility with Strong-Drive SDCF screws - the recessed, countersunk hole geometry is matched to 8 mm-diameter Strong-Drive SDCF Timber-CF screws, so the washer and fastener work together as a coordinated system rather than a generic pairing.
- Reduces total fastener count per connection - the high load capacity of each properly guided angled screw means fewer screws achieve the required connection strength, streamlining both material takeoffs and field installation.
- G90 galvanized protection built in - the corrosion-resistant coating means the washer holds up over the long service life expected of structural mass timber assemblies, without requiring additional field treatment.
Specifications
- Model Number: MTW45-8-R10
- Brand: Simpson Strong-Tie
- Material: ASTM A27, Grade 70 - 40
- Coating/Finish: Zinc Galvanized, G90
- Compatible Screw Diameter: 8 mm
- Compatible Screws: Strong-Drive SDCF Timber-CF screws
- Compatible Connection Plates: 10 gauge - 33 ksi
- Drive Angle: 45 deg.
- Pack Quantity: 10
Approved Applications
- Mass timber angled screw connections requiring 45 deg. drive angle
- Use with 10 gauge - 33 ksi connection plates in mass timber assemblies
- Applications utilizing 8 mm-diameter Strong-Drive SDCF Timber-CF screws
What's Included
- 10 x Simpson Strong-Tie MTW45-8 Mass Timber Angled Washers
Frequently Asked Questions
What screws are compatible with the MTW45-8-R10 angled washer?
The MTW45-8-R10 is designed for use with 8 mm-diameter Simpson Strong-Tie Strong-Drive SDCF Timber-CF screws, which seat cleanly into the recessed hole thanks to the washer's countersunk design.
At what angle does the MTW45-8 guide the screw?
The washer is engineered to guide the screw to an accurate 45 deg. angle, which is the optimal drive angle for maximizing the strength and stiffness of mass timber connections.
What connection plates is the MTW45-8-R10 compatible with?
The MTW45-8-R10 is designed for use with a wide variety of 10 gauge - 33 ksi connection plates commonly used in mass timber construction applications.
What corrosion protection does the MTW45-8-R10 offer?
Each washer is finished with a Zinc Galvanized, G90 coating, providing extra corrosion resistance for demanding construction environments.
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FAQs
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