Product Details

Strong-Drive® SDCFC TIMBER-CFC Screw

Product Details

The Strong-Drive SDCFC Timber-CFC screw (CFC — Countersunk, Fully Threaded, Cylinder Head) — a robust structural fastener available in a variety of long sizes (500 mm – 1,000 mm) — is designed for cross-laminated timber (CLT) construction, mass timber construction and general interior applications. These sturdy 0.390"-diameter structural fasteners provide extra strength for demanding applications requiring large-sized structural members. The compact cylinder head provides clean countersinking with a reduced footprint. The yellow zinc, fully-threaded screw, with a proprietary point, provides fast starts and excellent withdrawal resistance. For interior and dry applications only.

Key Features

Interior grade yellow-zinc coating
Compact cylinder head helps countersink the screw for an unobstructed finish
Heavy-duty, fully-threaded 0.390" (10 mm) outer diameter provides strength, with superb withdrawal resistance
Deep 6-lobe recess for a secure drive (replacement bit: BIT50T-2-R1)
Available in 500 mm (19 5/8"), 600 mm (23 5/8"), 800 mm (31 1/2"), and 1,000 mm (39 3/8") lengths

Applications

Beam reinforcement, wall to wall, floor to floor, support beams, butt joints, and splitting reinforcement

Catalog Pages

C-F-2023 (Fastening Systems), page 97

Related Literature

Connectors, Fasteners & Anchors for Mass Timber Construction

C-C-MASSTIMBER24

A catalog featuring connectors, fasteners and anchors for mass timber and CLT construction solutions.

Catalog

Fastening Systems Catalog

C-F-2023

A catalog including new product information as well as any applicable specification and installation instructions for Simpson Strong-Tie® fasteners and Quik Drive® systems.

Catalog

Sistemas de sujeción

C-F-2023SP

Catálogo que incluye información sobre productos nuevos y las instrucciones de instalación y especificaciones correspondientes para los sujetadores Simpson Strong-Tie® y los sistemas Quik Drive®.

Catalog

Strong-Drive® SDCFC TIMBER-CFC Screw For Heavy-Duty Mass Timber and Laminated Timber Reinforcement

S-F-SDCFC22

A sales flier providing product and installation information about the Strong-Drive® SDCFC TIMBER-CFC screw for CLT and other mass timber applications.

Flier

"Simpson Strong-Tie® Strong-Drive® SDCF TIMBER-CF and SDCFC TIMBER-CFC Screws for Reinforcement of Perpendicular–to-Grain Tension Forces - Allowable Stress"

TEB-F-SDCFRINF

This bulletin introduces a design procedure that offers screw reinforcement solutions for perpendicular-to-grain based on European code and aligned with NDS for Wood Construction (AWC 2024)

Technical Bulletin

End Grain Factor for Withdrawal of Simpson Strong-Tie® Strong-Drive® SDCF TIMBER-CF and SDCFC TIMBER-CFC Threaded Fasteners

L-F-WDEND24

This letter provides end-grain withdrawal values and spacing for the Strong-Drive® SDCF Timber-CF and SDCFC Timber-CFC fasteners.

Engineering Letter

Product Information Table

Fastener Production Information and Stuff & Things

New products
Model No.	Coating/Material	Length (in.)	Head Diameter (in.)	Shank Diameter (in.)	Drive Type	Head Type	Thread Length (in.)	Packaging Qty.
SDCFC271958	Yellow-Zinc Coated	19 5/8	0.525	0.290	T50 6-Lobe	Cylinder Head	18 3/8	50
SDCFC272358	Yellow-Zinc Coated	23 5/8	0.525	0.290	T50 6-Lobe	Cylinder Head	22 1/4	50
SDCFC273112	Yellow-Zinc Coated	31 1/2	0.525	0.290	T50 6-Lobe	Cylinder Head	30 1/8	50
SDCFC273938	Yellow-Zinc Coated	39 3/8	0.525	0.290	T50 6-Lobe	Cylinder Head	38	50