Simpson Strong-Tie releases expanded line of Strong-Drive premium screws for mass timber assemblies; Strong-Drive mass timber screws are designed to provide structural fastening solutions for the construction and repair of mass timber

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July 22, 2022 (press release) –

Simpson Strong-Tie, the leader in engineered structural connectors and building solutions, has launched an expanded line of Strong-Drive premium screws designed to provide structural fastening solutions for the construction and repair of mass timber assemblies and structures.

The popularity of cross-laminated timber (CLT) and other mass timber products continues to grow as architects, designers, and builders seek the enhanced rigidity necessary for creating larger and taller wood-framed buildings. As projects proliferate, the need for 10 –millimeter diameter fasteners designed for superior bearing and splitting reinforcement has increased.

Rigorously tested and designed to provide strength across a wide range of designs, Simpson Strong-Tie mass timber fasteners and connectors are ideal for CLT construction and are offered through an established national network of construction suppliers. The new family of yellow-zinc- coated, 10-millimeter Strong-Drive mass timber screws includes an impressive selection of countersinking fasteners in fully threaded, partially-threaded, cylinder-head, and flat-head options to provide ultimate versatility on the jobsite and meet the unique fastening demands of mass timber projects.

“Backed by a robust inventory and distribution system, along with first-rate service, support, and training, this collection of versatile, high-performance products will allow for design flexibility while enabling mass timber projects to be built stronger, faster, and more easily than ever,” says Clark Allen, Market Segment Manager for fasteners at Simpson Strong-Tie.

The fully-threaded Strong-Drive SDCFC Timber-CFC cylinder-head screw is ideal for applications like beam and splitting reinforcement, as well as repair of checked or cracked timber.  This screw offers structural strength and high pullout resistance with a 10 mm diameter and lengths from 500 mm (19 5/8”) to 1000 mm (39 3/8”). It features a unique fast-starting point for easy installation and a countersinking head for an unobstructed finish.

The fully-threaded Strong-Drive SDCF Timber-CF flat-head timber screw is ideal for projects where high pullout resistance with low-torque driving, excellent shear and countersunk head is desired — including beam reinforcement, wall-to-wall, floor-to-floor, support beam, butt joint, and bearing and splitting reinforcement applications.  The 10mm diameter SDCF also features a fast-starting point for easy installations without the need for predrilling and is available in 100 mm (4″) to 600 mm (23 5/8″) lengths.

The partially-threaded Strong-Drive SDCP Timber-CP screw is a structural fastener engineered to pull structural members together with superb holding power and high pullout resistance. ‚ÄčThe 10mm diameter version is available in 100 mm (4”) to 360 mm (14”) lengths and features a flat head, mid-shaft knurl, and Type-17 point for fast starts and low-torque driving without predrilling.

For more information on the new line of Strong-Drive premium structural screws or to learn more about how Simpson Strong-Tie can improve your next mass timber job, visit go.strongtie.com/masstimber or call (800) 999-5099.

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Chelsey Quick
Chelsey Quick
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