The MTC Solutions Structural Screw Catalog is the most comprehensive guide to ASSY® self-tapping screws (STSs). Within its pages, designers and installers will discover a wealth of practical and technical information, arranged in an easily navigable chapter format. This guide includes crucial design formulas for determining connection capacities and offers specific installation guidelines, accounting for various geometry requirements across a wide variety of scenarios. Additionally, this catalog provides tool recommendations, defines service conditions, and outlines all fastener references for incorporation into your design specifications. This makes it ideal for any project involving engineered wood products such as cross-laminated timber (CLT) and glue-laminated timber (glulam).
The Structural Screw Catalog serves as an indispensable tool for designing connections and ensuring proper installation of fasteners in your cutting-edge, code-compliant mass timber projects.
NEW product section: Self-Drilling Dowels, featuring our cylinder head dowel fasteners designed for internal knife plate connections.
NEW in-depth appendix section including:
Step-by-step installation guidelines
Lateral connection knowledge
Geometry requirements
Steel-to-wood connection details
Patch Notes
April 17, 2018
Introducing the Structural Screw Catalog for United States-based projects, featuring ASSY 3.0 partially and fully threaded STSs with detailed measurements for each of their parts.
The Lateral Connection Design section outlines strength resistances for specific woods and their connections, including distinctions for plywood and engineered wood products based on their respective material grades.
The Spacing and Edge Distance Requirements section features a table on timber connection geometry without predrilling.
The CLT Requirements for Non-Predrilled Self-Tapping Fasteners includes a table on CLT connection geometry without predrilling and details on group action for staggered fasteners.
Includes a Predrilling Recommendations table and ASSY Pilot Hole Length Recommendations
The ASSY Reference Design Values section features tables on Withdrawal Design Values (W), Head Pull-Through Design Values (P), Allowable Fastener Tensile Strength Values, and Reference Lateral Design Values (Z).
Patch Notes
April 15, 2018
Introducing the Structural Screw Catalog for Canada-based projects, featuring ASSY 3.0 partially and fully threaded STSs with detailed measurements for each of their parts.
The Lateral Connection Design section outlines strength resistances for specific woods and their connections, including distinctions for plywood and engineered wood products based on their respective material grades.
The Spacing and Edge Distance Requirements section features a table on timber connection geometry without predrilling.
The CLT Requirements for Non-Predrilled Self-Tapping Fasteners includes a table on CLT connection geometry without predrilling and details on group action for staggered fasteners.
Includes a Predrilling Recommendations table and ASSY Pilot Hole Length Recommendations
The ASSY Reference Design Values section features tables on Withdrawal Design Values (W), Head Pull-Through Design Values (P), Allowable Fastener Tensile Strength Values, and Reference Lateral Design Values (Z).
All Fasteners, One Guide
All MTC Solutions structural fastener references are consolidated in one document for a convenient design and ordering process.
Fastener Connection Design Made Easy
Near the beginning of the document, you will find sections dedicated to detailing connection resistances for both single and multiple fasteners in various loading conditions. There is also a formula summary section, complete with the references you need to efficiently design connections with structural screws. It features formulas for Adjusted Withdrawal, Buckling, and Head Pull-Through design values, as well as Fastener Tensile and Shear strengths, and more!
For Both Designers and Installers
The Structural Screw Catalog is prepared with both designers and installers in mind. General Notes are divided into separate sections for designers and installers to ensure ease of use. Designers will find helpful references like design values and geometry requirements for our fasteners, while installers can especially benefit from the appendix, which includes step-by-step installation guidelines and recommendations for predrilling, pilot holes, and installing steel-to-wood connections.
A 2-in-1 Package
The Structural Screw Catalog pairs especially well with our Structural Screw Connection Design Guide, creating the perfect reference tool for designing mass timber connections with our fasteners. The Structural Screw Catalog is a do-it-yourself guide that gives you the flexibility to design any connection you may need. The Structural Screw Connection Design Guide, on the other hand, offers pre-engineered, cost-efficient solutions for a wide variety of mass timber and light-frame connections commonly found in the industry.
