Strong-Drive® SDCF TIMBER-CF Screw

Product Details

The Strong-Drive SDCF Timber-CF screw is a structural fastener available in a variety of lengths and is designed for cross-laminated timber construction, mass timber construction and general interior applications. These 0.315"- and 0.394"-diameter structural fasteners provide uncompromised strength for these demanding applications. The large flat head with underhead nibs provides for clean countersinking. The yellow zinc, fully-threaded screw, with a proprietary unique point, provides fast starts and excellent withdrawal resistance. For interior and dry applications only.

Key Features

Flat head with nibs helps countersink the screw for a flush finish
Heavy-duty, fully-threaded shank provides strength, with superb withdrawal resistance
Head stamp includes length in mm for inspection
Type-17 point for fast starts
Interior grade yellow-zinc coating
Deep 6-lobe recess for a secure drive (replacement bit: BIT50T-134 for 23 5/8" length; BIT40T-134 for all others)
Available in 4 3/4", 5 1/2", 6 1/4", 7", 8 5/8", 10 1/4", 11 3/4", 13 3/4", 19 5/8" and 23 5/8" lengths

Applications

Beam reinforcement, wall-to-wall, floor-to-floor, support beams, butt joints

Related Literature

Strong-Drive® SDCF TIMBER-CF Screw

S-F-SDCF20

A flier providing product and installation information about the Strong-Drive® SDCF TIMBER-CF screw.

Flier

Connectors and Fasteners for Mass Timber Construction Catalog

C-C-MASSTIMBER20

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

Catalog

Strong-Drive® SDCF, SDCP, and SDHR screws in ICC-ES ESR-3046

L-F-SDCFCPHR21

Simpson Strong-Tie® Strong-Drive® SDCF Timber-CF screw, SDCP Timber-CP screw and SDHR Combo-Head screw are now listed in ICC-ES ESR-3046.

Engineering Letter

Simpson Strong-Tie® Strong-Drive® SDCF TIMBER-CF Screw

L-F-SDCFSCREW20

Strong-Drive® SDCF Timber-CF screws are load rated for shear, pull-through and withdrawal resistance in sawn wood, glulam, CLT and engineered wood products.

Engineering Letter

Simpson Strong-Tie® Strong-Drive® SDCF TIMBER-CF Screws

L-F-SDCFCAN20

This letter provides design information for Simpson Strong-Tie Strong-Drive SDCF TIMBER-CF screws used in wood-to-wood connections in accordance with CSA Standard O86-14 and NBC 2015.

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	Point Type	Packaging Qty.
SDCF221014	Yellow-Zinc Coated	10 1/4	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	9.65	Type-17 Point	250
SDCF221014-R50	Yellow-Zinc Coated	10 1/4	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	9.65	Type-17 Point	50
SDCF221134	Yellow-Zinc Coated	11 3/4	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	11.22	Type-17 Point	250
SDCF221134-R50	Yellow-Zinc Coated	11 3/4	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	11.22	Type-17 Point	50
SDCF221334	Yellow-Zinc Coated	13 3/4	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	13.19	Type-17 Point	250
SDCF221334-R50	Yellow-Zinc Coated	13 3/4	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	13.19	Type-17 Point	50
SDCF22434	Yellow-Zinc Coated	4 3/4	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	4.13	Type-17 Point	250
SDCF22434-R50	Yellow-Zinc Coated	4 3/4	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	4.13	Type-17 Point	50
SDCF22512	Yellow-Zinc Coated	5 1/2	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	4.92	Type-17 Point	250
SDCF22512-R50	Yellow-Zinc Coated	5 1/2	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	4.92	Type-17 Point	50
SDCF22614	Yellow-Zinc Coated	6 1/4	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	5.71	Type-17 Point	250
SDCF22614-R50	Yellow-Zinc Coated	6 1/4	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	5.71	Type-17 Point	50
SDCF22700	Yellow-Zinc Coated	7	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	6.5	Type-17 Point	250
SDCF22700-R50	Yellow-Zinc Coated	7	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	6.5	Type-17 Point	50
SDCF22858	Yellow-Zinc Coated	8 5/8	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	8.07	Type-17 Point	250
SDCF22858-R50	Yellow-Zinc Coated	8 5/8	0.59	0.23	T40 6-Lobe	Flat Head with Nibs	8.07	Type-17 Point	50
SDCF271958	Yellow-Zinc Coated	19 5/8	0.73	0.28	T50 6-Lobe	Flat Head with Nibs	18.31	Type-17 Point	100
SDCF271958-R25	Yellow-Zinc Coated	19 5/8	0.73	0.28	T50 6-Lobe	Flat Head with Nibs	18.31	Type-17 Point	25
SDCF272358	Yellow-Zinc Coated	23 5/8	0.73	0.28	T50 6-Lobe	Flat Head with Nibs	22.24	Type-17 Point	100
SDCF272358-R25	Yellow-Zinc Coated	23 5/8	0.73	0.28	T50 6-Lobe	Flat Head with Nibs	22.24	Type-17 Point	25