Fasteners for Structural Connections in Mass Timber
Elevate mass timber construction projects with SPAX fasteners, offering unparalleled strength and precision for secure and efficient assembly.
ICC ES Report and Product BIM Files
Full Thread XR Series Group
Includes Diameter: 5/8" (16 mm) XR Series is fully threaded to provide a strong, uniform grip along the entire length of the screw, ideal for applications requiring high withdrawal resistance. Hex Head eliminates the need and cost of a separate washer and allows for easy insertion and removal without stripping. Threaded rod provides additional transverse reinforcement or large withdrawal capacity. The ideal product to replace glued-in rods.
Product Submittal Download
Fully Threaded XF Series Group
The XF #14 (6mm) fully threaded series offers a strong, uniform grip with high withdrawal resistance, with a Cylinder head for concealed applications, patented serrations for fast installation, and a 4CUT Point to reduce splitting and eliminate pre-drilling.
Fully threaded to provide a strong, uniform grip along the entire length of the screw, ideal for applications requiring high withdrawal resistance. Cylinder head provides a compact, low-profile head which is ideal for concealed applications. Patented Serrations ensure rapid and effective fastening, cutting through the fibers of the material faster than a smooth thread. 4CUT Point reduces splitting by pushing aside the fiber of the wood, reducing driving torque, and eliminating pre-drilling.
Fully Threaded XC Series Group
Includes Diameters: 5/16” (8mm) and 3/8" (10 mm) XC Series fully threaded fasteners provide strong grip and high withdrawal resistance, with a Flat/Countersunk head for flush countersinking or Cylinder head for concealed applications, Patented Serrations for fast fastening, and a Cut Point to reduce splitting and eliminate pre-drilling.
Fully threaded to provide a strong, uniform grip along the entire length of the screw, ideal for applications requiring high withdrawal resistance. Flat / Countersunk Head provides flush countersinking, and mills in wood, and stops on metal. Ideal for Beam Hangers / Bracket attachment where high-withdrawal resistance is needed. Cylinder head provides a compact, low-profile head which is ideal for concealed applications. Patented Serrations ensure rapid and effective fastening, cutting through the fibers of the material faster than a smooth thread. Cut Point allows precision placement and eliminates pre-drilling (wood dependent) and effectively reduces splitting of the wood. Note: Check catalog for specific head sizes and coatings available by diameter!
Partial Thread XF Series Group
Includes diameters: #14 (6 mm), 1/4" (7 mm), 5/16" (8 mm) and 3/8" (10 mm); Partially threaded fasteners to ensure strong wood-to-wood clamping action. Patented thread serrations ensure rapid and effective fastening, cutting through the fibers of the material faster than a smooth thread. 4CUT Point reduces splitting by pushing aside the fiber of the wood, reducing driving torque, and eliminating pre-drilling. Upper 4CUT bores out the wood for the screw shank, reduces installation torque. Pancake head offers a flush installation to ensure a tight connection and increased clamping force. It also offers a large bearing area for improved head pull-through capacity. Flat / Countersunk Head provides flush countersinking, and mills in wood, and stops on metal. Washer head has a large diameter for high clamping force and an attractive low-profile finish. Hex Head eliminates the need and cost of a separate washer and allows for easy insertion and removal without stripping. Note: Check catalog for specific head sizes and coatings available by diameter!
Partial Thread XS Series Group
Includes Diameter: 1/2" (12 mm) XS Series is partially threaded to ensure strong wood-to-wood clamping action. Patented Serrations ensure rapid and effective fastening, cutting through the fibers of the material faster than a smooth thread. Hex Head allows for higher applied torque, eliminates the need / cost of a separate washer and allows for easy insertion and removal without stripping.
Optimal rigidity, malleability, and material strength
Proprietary heat treatment process optimizes each fasteners shear strength without breakage.
What is Mass Timber?
Mass timber is a type of engineered wood product made from several layers of lumber boards that are glued together to create large structural elements such as columns, beams, and panels. Mass timber is a renewable and sustainable building material that is gaining popularity in the construction industry due to its many benefits, including its strength, durability, and aesthetic appeal.
There are several types of mass timber:
- Cross-laminated timber (CLT). CLT is the most common type of mass timber and consists of several layers of lumber boards stacked perpendicular to each other and bonded with adhesive.
- Nail-laminated timber (NLT). NLT is similar to CLT but is made by nailing the layers of lumber boards together instead of using adhesive.
- Dowel-laminated timber (DLT). DLT is similar to NLT but uses wood dowels to join boards instead of nails or screws.
- Glue-laminated timber (glulam). Glulam is made by gluing several layers of lumber boards together in parallel, creating a strong and durable beam or column.
Mass timber has several advantages over traditional building materials such as concrete and steel. It is lightweight, yet strong and durable, and can be used to build tall buildings without the need for a steel or concrete core. Mass timber also has a lower carbon footprint than traditional building materials, as the production process generates less greenhouse gas emissions. Additionally, mass timber is easy to work with and can be cut and shaped on-site, allowing for faster construction times.
In recent years, mass timber has become increasingly popular in the construction industry, with several tall buildings being constructed using this material. The use of mass timber is expected to continue to grow as more architects and builders recognize the benefits of this sustainable and innovative building material.
Cross-laminated timber (CLT)
Cross-laminated timber (CLT) is a wood panel system that is rapidly gaining popularity in the U.S. after being widely adopted in Europe. The strength, dimensional stability, and rigidity of CLT allow it to be used in mid- and high-rise buildings.
GLUED-LAMINATED TIMBER (Glulam)
Glued-laminated timber (glulam) is a structural engineered wood product commonly used for beams and columns in residential and commercial applications. It is a highly visible form of mass timber in contemporary projects, with long spans framing signature designs left exposed to take advantage of wood’s natural aesthetic.